Finding the Fourth Proportional to 1,573.50, 2,359.20 and 881.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.50 : 2,359.20 = 881.18 : x
2. Step 2: Convert to fraction form
   1,573.50/2,359.20 = 881.18/x
3. Step 3: Cross multiply
   1,573.50x = 2,359.20 × 881.18
4. Step 4: Simplify right side
   1,573.50x = 2,078,879.86
5. Step 5: Solve for x
   x = 2,078,879.86/1,573.50
6. Step 6: Final answer
   x = 1,321.18