Finding the Fourth Proportional to 1,015,723.72, 1,401,689.80 and 556,829.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,723.72 : 1,401,689.80 = 556,829.96 : x
2. Step 2: Convert to fraction form
   1,015,723.72/1,401,689.80 = 556,829.96/x
3. Step 3: Cross multiply
   1,015,723.72x = 1,401,689.80 × 556,829.96
4. Step 4: Simplify right side
   1,015,723.72x = 780,502,870,142.05
5. Step 5: Solve for x
   x = 780,502,870,142.05/1,015,723.72
6. Step 6: Final answer
   x = 768,420.44