Finding the Fourth Proportional to 2,038.99, 2,814.30 and 1,155.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.99 : 2,814.30 = 1,155.31 : x
2. Step 2: Convert to fraction form
   2,038.99/2,814.30 = 1,155.31/x
3. Step 3: Cross multiply
   2,038.99x = 2,814.30 × 1,155.31
4. Step 4: Simplify right side
   2,038.99x = 3,251,388.93
5. Step 5: Solve for x
   x = 3,251,388.93/2,038.99
6. Step 6: Final answer
   x = 1,594.61