Finding the Fourth Proportional to 2,038.55, 2,813.29 and 1,142.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.55 : 2,813.29 = 1,142.21 : x
2. Step 2: Convert to fraction form
   2,038.55/2,813.29 = 1,142.21/x
3. Step 3: Cross multiply
   2,038.55x = 2,813.29 × 1,142.21
4. Step 4: Simplify right side
   2,038.55x = 3,213,372.15
5. Step 5: Solve for x
   x = 3,213,372.15/2,038.55
6. Step 6: Final answer
   x = 1,576.31