Finding the Fourth Proportional to 1,963.91, 2,939.56 and 1,038.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,963.91 : 2,939.56 = 1,038.15 : x
2. Step 2: Convert to fraction form
   1,963.91/2,939.56 = 1,038.15/x
3. Step 3: Cross multiply
   1,963.91x = 2,939.56 × 1,038.15
4. Step 4: Simplify right side
   1,963.91x = 3,051,701.62
5. Step 5: Solve for x
   x = 3,051,701.62/1,963.91
6. Step 6: Final answer
   x = 1,553.89