Finding the Fourth Proportional to 2,599.74, 3,587.72 and 1,420.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.74 : 3,587.72 = 1,420.83 : x
2. Step 2: Convert to fraction form
   2,599.74/3,587.72 = 1,420.83/x
3. Step 3: Cross multiply
   2,599.74x = 3,587.72 × 1,420.83
4. Step 4: Simplify right side
   2,599.74x = 5,097,533.10
5. Step 5: Solve for x
   x = 5,097,533.10/2,599.74
6. Step 6: Final answer
   x = 1,960.79