Finding the Fourth Proportional to 2,599.55, 3,587.24 and 1,420.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.55 : 3,587.24 = 1,420.39 : x
2. Step 2: Convert to fraction form
   2,599.55/3,587.24 = 1,420.39/x
3. Step 3: Cross multiply
   2,599.55x = 3,587.24 × 1,420.39
4. Step 4: Simplify right side
   2,599.55x = 5,095,254.79
5. Step 5: Solve for x
   x = 5,095,254.79/2,599.55
6. Step 6: Final answer
   x = 1,960.06