Finding the Fourth Proportional to 547,041.89, 754,322.69 and 355,700.45

Step by Step Solution

1. Step 1: Write the proportion equation
   547,041.89 : 754,322.69 = 355,700.45 : x
2. Step 2: Convert to fraction form
   547,041.89/754,322.69 = 355,700.45/x
3. Step 3: Cross multiply
   547,041.89x = 754,322.69 × 355,700.45
4. Step 4: Simplify right side
   547,041.89x = 268,312,918,499.71
5. Step 5: Solve for x
   x = 268,312,918,499.71/547,041.89
6. Step 6: Final answer
   x = 490,479.66