Finding the Fourth Proportional to 2,126.71, 3,177.86 and 1,623.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.71 : 3,177.86 = 1,623.60 : x
2. Step 2: Convert to fraction form
   2,126.71/3,177.86 = 1,623.60/x
3. Step 3: Cross multiply
   2,126.71x = 3,177.86 × 1,623.60
4. Step 4: Simplify right side
   2,126.71x = 5,159,562.59
5. Step 5: Solve for x
   x = 5,159,562.59/2,126.71
6. Step 6: Final answer
   x = 2,426.08