Finding the Fourth Proportional to 1,814.30, 2,502.86 and 1,115.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.30 : 2,502.86 = 1,115.42 : x
2. Step 2: Convert to fraction form
   1,814.30/2,502.86 = 1,115.42/x
3. Step 3: Cross multiply
   1,814.30x = 2,502.86 × 1,115.42
4. Step 4: Simplify right side
   1,814.30x = 2,791,740.10
5. Step 5: Solve for x
   x = 2,791,740.10/1,814.30
6. Step 6: Final answer
   x = 1,538.74