Finding the Fourth Proportional to 2,080.18, 3,117.93 and 1,038.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.18 : 3,117.93 = 1,038.61 : x
2. Step 2: Convert to fraction form
   2,080.18/3,117.93 = 1,038.61/x
3. Step 3: Cross multiply
   2,080.18x = 3,117.93 × 1,038.61
4. Step 4: Simplify right side
   2,080.18x = 3,238,313.28
5. Step 5: Solve for x
   x = 3,238,313.28/2,080.18
6. Step 6: Final answer
   x = 1,556.75