Finding the Fourth Proportional to 1,523.10, 2,281.82 and 871.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.10 : 2,281.82 = 871.86 : x
2. Step 2: Convert to fraction form
   1,523.10/2,281.82 = 871.86/x
3. Step 3: Cross multiply
   1,523.10x = 2,281.82 × 871.86
4. Step 4: Simplify right side
   1,523.10x = 1,989,427.59
5. Step 5: Solve for x
   x = 1,989,427.59/1,523.10
6. Step 6: Final answer
   x = 1,306.17