Finding the Fourth Proportional to 2,598.88, 3,581.76 and 2,156.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.88 : 3,581.76 = 2,156.80 : x
2. Step 2: Convert to fraction form
   2,598.88/3,581.76 = 2,156.80/x
3. Step 3: Cross multiply
   2,598.88x = 3,581.76 × 2,156.80
4. Step 4: Simplify right side
   2,598.88x = 7,725,139.97
5. Step 5: Solve for x
   x = 7,725,139.97/2,598.88
6. Step 6: Final answer
   x = 2,972.49