| ( | 1 | − | 5200 | ÷ | X | ) | × | 100 | = | 19 2 |
| 1 | × | 100 | − | 5200 | ÷ | X | × | 100 | = | 19 2 |
| 100 | − | 520000 | ÷ | X | = | 19 2 |
| Multiply both sides of the equation by: | X |
| 100 | X | − | 520000 | = | 19 2 | X |
| 100 | X | − | 19 2 | X | = | 520000 |
181 2 | X | = | 520000 |
| X | = | 520000 | ÷ | 181 2 |
| = | 520000 | × | 2 181 |
| X | = | 1040000 181 |
| X | = | 5745.856354 |