Finding the Fourth Proportional to 2,621.88, 3,934.18 and 2,470.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.88 : 3,934.18 = 2,470.61 : x
2. Step 2: Convert to fraction form
   2,621.88/3,934.18 = 2,470.61/x
3. Step 3: Cross multiply
   2,621.88x = 3,934.18 × 2,470.61
4. Step 4: Simplify right side
   2,621.88x = 9,719,837.37
5. Step 5: Solve for x
   x = 9,719,837.37/2,621.88
6. Step 6: Final answer
   x = 3,707.20