Finding the Fourth Proportional to 552,571.82, 762,547.89 and 310,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,571.82 : 762,547.89 = 310,854.50 : x
2. Step 2: Convert to fraction form
   552,571.82/762,547.89 = 310,854.50/x
3. Step 3: Cross multiply
   552,571.82x = 762,547.89 × 310,854.50
4. Step 4: Simplify right side
   552,571.82x = 237,041,443,072.01
5. Step 5: Solve for x
   x = 237,041,443,072.01/552,571.82
6. Step 6: Final answer
   x = 428,978.52