Finding the Fourth Proportional to 1,055,774.25, 1,455,356.16 and 647,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,774.25 : 1,455,356.16 = 647,118.72 : x
2. Step 2: Convert to fraction form
   1,055,774.25/1,455,356.16 = 647,118.72/x
3. Step 3: Cross multiply
   1,055,774.25x = 1,455,356.16 × 647,118.72
4. Step 4: Simplify right side
   1,055,774.25x = 941,788,215,403.32
5. Step 5: Solve for x
   x = 941,788,215,403.32/1,055,774.25
6. Step 6: Final answer
   x = 892,035.60