Finding the Fourth Proportional to 2,042.18, 3,060.64 and 988.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.18 : 3,060.64 = 988.48 : x
2. Step 2: Convert to fraction form
   2,042.18/3,060.64 = 988.48/x
3. Step 3: Cross multiply
   2,042.18x = 3,060.64 × 988.48
4. Step 4: Simplify right side
   2,042.18x = 3,025,381.43
5. Step 5: Solve for x
   x = 3,025,381.43/2,042.18
6. Step 6: Final answer
   x = 1,481.45