Finding the Fourth Proportional to 3,337.50, 5,005.91 and 872.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,337.50 : 5,005.91 = 872.00 : x
2. Step 2: Convert to fraction form
   3,337.50/5,005.91 = 872.00/x
3. Step 3: Cross multiply
   3,337.50x = 5,005.91 × 872.00
4. Step 4: Simplify right side
   3,337.50x = 4,365,142.90
5. Step 5: Solve for x
   x = 4,365,142.90/3,337.50
6. Step 6: Final answer
   x = 1,307.91