Finding the Fourth Proportional to 2,771.04, 4,155.12 and 1,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.04 : 4,155.12 = 1,038.72 : x
2. Step 2: Convert to fraction form
   2,771.04/4,155.12 = 1,038.72/x
3. Step 3: Cross multiply
   2,771.04x = 4,155.12 × 1,038.72
4. Step 4: Simplify right side
   2,771.04x = 4,316,006.25
5. Step 5: Solve for x
   x = 4,316,006.25/2,771.04
6. Step 6: Final answer
   x = 1,557.54