Finding the Fourth Proportional to 914,787, 1,262,406.06 and 557,091

Step by Step Solution

1. Step 1: Write the proportion equation
   914,787 : 1,262,406.06 = 557,091 : x
2. Step 2: Convert to fraction form
   914,787/1,262,406.06 = 557,091/x
3. Step 3: Cross multiply
   914,787x = 1,262,406.06 × 557,091
4. Step 4: Simplify right side
   914,787x = 703,275,054,371.46
5. Step 5: Solve for x
   x = 703,275,054,371.46/914,787
6. Step 6: Final answer
   x = 768,785.58