Finding the Fourth Proportional to 2,038.72, 2,813.54 and 1,154.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.72 : 2,813.54 = 1,154.57 : x
2. Step 2: Convert to fraction form
   2,038.72/2,813.54 = 1,154.57/x
3. Step 3: Cross multiply
   2,038.72x = 2,813.54 × 1,154.57
4. Step 4: Simplify right side
   2,038.72x = 3,248,424.86
5. Step 5: Solve for x
   x = 3,248,424.86/2,038.72
6. Step 6: Final answer
   x = 1,593.37