Finding the Fourth Proportional to 1,508.20, 2,080.24 and 1,298.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,508.20 : 2,080.24 = 1,298.01 : x
2. Step 2: Convert to fraction form
   1,508.20/2,080.24 = 1,298.01/x
3. Step 3: Cross multiply
   1,508.20x = 2,080.24 × 1,298.01
4. Step 4: Simplify right side
   1,508.20x = 2,700,155.43
5. Step 5: Solve for x
   x = 2,700,155.43/1,508.20
6. Step 6: Final answer
   x = 1,790.32