Finding the Fourth Proportional to 783,746.72, 1,175,952.94 and 428,345.52

Step by Step Solution

1. Step 1: Write the proportion equation
   783,746.72 : 1,175,952.94 = 428,345.52 : x
2. Step 2: Convert to fraction form
   783,746.72/1,175,952.94 = 428,345.52/x
3. Step 3: Cross multiply
   783,746.72x = 1,175,952.94 × 428,345.52
4. Step 4: Simplify right side
   783,746.72x = 503,714,173,579.83
5. Step 5: Solve for x
   x = 503,714,173,579.83/783,746.72
6. Step 6: Final answer
   x = 642,700.20