Finding the Fourth Proportional to 2,501.86, 3,747.90 and 2,155.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.86 : 3,747.90 = 2,155.18 : x
2. Step 2: Convert to fraction form
   2,501.86/3,747.90 = 2,155.18/x
3. Step 3: Cross multiply
   2,501.86x = 3,747.90 × 2,155.18
4. Step 4: Simplify right side
   2,501.86x = 8,077,399.12
5. Step 5: Solve for x
   x = 8,077,399.12/2,501.86
6. Step 6: Final answer
   x = 3,228.56