Finding the Fourth Proportional to 547,436.62, 755,526.27 and 455,393.31

Step by Step Solution

1. Step 1: Write the proportion equation
   547,436.62 : 755,526.27 = 455,393.31 : x
2. Step 2: Convert to fraction form
   547,436.62/755,526.27 = 455,393.31/x
3. Step 3: Cross multiply
   547,436.62x = 755,526.27 × 455,393.31
4. Step 4: Simplify right side
   547,436.62x = 344,061,606,054.03
5. Step 5: Solve for x
   x = 344,061,606,054.03/547,436.62
6. Step 6: Final answer
   x = 628,495.78