Finding the Fourth Proportional to 2,875.91, 4,311.88 and 1,001.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.91 : 4,311.88 = 1,001.31 : x
2. Step 2: Convert to fraction form
   2,875.91/4,311.88 = 1,001.31/x
3. Step 3: Cross multiply
   2,875.91x = 4,311.88 × 1,001.31
4. Step 4: Simplify right side
   2,875.91x = 4,317,539.78
5. Step 5: Solve for x
   x = 4,317,539.78/2,875.91
6. Step 6: Final answer
   x = 1,501.28