Finding the Fourth Proportional to 921,233.72, 1,271,310.86 and 507,747.83

Step by Step Solution

1. Step 1: Write the proportion equation
   921,233.72 : 1,271,310.86 = 507,747.83 : x
2. Step 2: Convert to fraction form
   921,233.72/1,271,310.86 = 507,747.83/x
3. Step 3: Cross multiply
   921,233.72x = 1,271,310.86 × 507,747.83
4. Step 4: Simplify right side
   921,233.72x = 645,505,325,333.25
5. Step 5: Solve for x
   x = 645,505,325,333.25/921,233.72
6. Step 6: Final answer
   x = 700,696.59