Finding the Fourth Proportional to 918,552, 1,267,720.56 and 516,144

Step by Step Solution

1. Step 1: Write the proportion equation
   918,552 : 1,267,720.56 = 516,144 : x
2. Step 2: Convert to fraction form
   918,552/1,267,720.56 = 516,144/x
3. Step 3: Cross multiply
   918,552x = 1,267,720.56 × 516,144
4. Step 4: Simplify right side
   918,552x = 654,326,360,720.64
5. Step 5: Solve for x
   x = 654,326,360,720.64/918,552
6. Step 6: Final answer
   x = 712,345.47