Finding the Fourth Proportional to 2,078.48, 3,116.10 and 1,038.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.48 : 3,116.10 = 1,038.89 : x
2. Step 2: Convert to fraction form
   2,078.48/3,116.10 = 1,038.89/x
3. Step 3: Cross multiply
   2,078.48x = 3,116.10 × 1,038.89
4. Step 4: Simplify right side
   2,078.48x = 3,237,285.13
5. Step 5: Solve for x
   x = 3,237,285.13/2,078.48
6. Step 6: Final answer
   x = 1,557.53