Finding the Fourth Proportional to 3,702.50, 5,109.91 and 2,131.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,702.50 : 5,109.91 = 2,131.10 : x
2. Step 2: Convert to fraction form
   3,702.50/5,109.91 = 2,131.10/x
3. Step 3: Cross multiply
   3,702.50x = 5,109.91 × 2,131.10
4. Step 4: Simplify right side
   3,702.50x = 10,889,698.32
5. Step 5: Solve for x
   x = 10,889,698.32/3,702.50
6. Step 6: Final answer
   x = 2,941.18