Finding the Fourth Proportional to 2,599.98, 3,587.88 and 1,421.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.98 : 3,587.88 = 1,421.02 : x
2. Step 2: Convert to fraction form
   2,599.98/3,587.88 = 1,421.02/x
3. Step 3: Cross multiply
   2,599.98x = 3,587.88 × 1,421.02
4. Step 4: Simplify right side
   2,599.98x = 5,098,449.24
5. Step 5: Solve for x
   x = 5,098,449.24/2,599.98
6. Step 6: Final answer
   x = 1,960.96