Finding the Fourth Proportional to 1,689,434.91, 2,331,401.61 and 915,046.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,434.91 : 2,331,401.61 = 915,046.49 : x
2. Step 2: Convert to fraction form
   1,689,434.91/2,331,401.61 = 915,046.49/x
3. Step 3: Cross multiply
   1,689,434.91x = 2,331,401.61 × 915,046.49
4. Step 4: Simplify right side
   1,689,434.91x = 2,133,340,848,353.84
5. Step 5: Solve for x
   x = 2,133,340,848,353.84/1,689,434.91
6. Step 6: Final answer
   x = 1,262,754.09