Finding the Fourth Proportional to 2,599.58, 3,587.37 and 1,420.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.58 : 3,587.37 = 1,420.61 : x
2. Step 2: Convert to fraction form
   2,599.58/3,587.37 = 1,420.61/x
3. Step 3: Cross multiply
   2,599.58x = 3,587.37 × 1,420.61
4. Step 4: Simplify right side
   2,599.58x = 5,096,253.70
5. Step 5: Solve for x
   x = 5,096,253.70/2,599.58
6. Step 6: Final answer
   x = 1,960.41