Finding the Fourth Proportional to 1,048.55, 1,572.89 and 355.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.55 : 1,572.89 = 355.32 : x
2. Step 2: Convert to fraction form
   1,048.55/1,572.89 = 355.32/x
3. Step 3: Cross multiply
   1,048.55x = 1,572.89 × 355.32
4. Step 4: Simplify right side
   1,048.55x = 558,877.50
5. Step 5: Solve for x
   x = 558,877.50/1,048.55
6. Step 6: Final answer
   x = 533.00