Finding the Fourth Proportional to 1,586,259.89, 2,188,807.71 and 907,065.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,586,259.89 : 2,188,807.71 = 907,065.17 : x
2. Step 2: Convert to fraction form
   1,586,259.89/2,188,807.71 = 907,065.17/x
3. Step 3: Cross multiply
   1,586,259.89x = 2,188,807.71 × 907,065.17
4. Step 4: Simplify right side
   1,586,259.89x = 1,985,391,237,568.46
5. Step 5: Solve for x
   x = 1,985,391,237,568.46/1,586,259.89
6. Step 6: Final answer
   x = 1,251,617.88