Finding the Fourth Proportional to 1,586,258.89, 2,188,806.33 and 907,064.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,586,258.89 : 2,188,806.33 = 907,064.17 : x
2. Step 2: Convert to fraction form
   1,586,258.89/2,188,806.33 = 907,064.17/x
3. Step 3: Cross multiply
   1,586,258.89x = 2,188,806.33 × 907,064.17
4. Step 4: Simplify right side
   1,586,258.89x = 1,985,387,799,600.35
5. Step 5: Solve for x
   x = 1,985,387,799,600.35/1,586,258.89
6. Step 6: Final answer
   x = 1,251,616.50