Finding the Fourth Proportional to 475,404.89, 655,767.29 and 388,316.52

Step by Step Solution

1. Step 1: Write the proportion equation
   475,404.89 : 655,767.29 = 388,316.52 : x
2. Step 2: Convert to fraction form
   475,404.89/655,767.29 = 388,316.52/x
3. Step 3: Cross multiply
   475,404.89x = 655,767.29 × 388,316.52
4. Step 4: Simplify right side
   475,404.89x = 254,645,272,953.42
5. Step 5: Solve for x
   x = 254,645,272,953.42/475,404.89
6. Step 6: Final answer
   x = 535,638.74