Finding the Fourth Proportional to 1,810.15, 2,499.55 and 1,148.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.15 : 2,499.55 = 1,148.18 : x
2. Step 2: Convert to fraction form
   1,810.15/2,499.55 = 1,148.18/x
3. Step 3: Cross multiply
   1,810.15x = 2,499.55 × 1,148.18
4. Step 4: Simplify right side
   1,810.15x = 2,869,933.32
5. Step 5: Solve for x
   x = 2,869,933.32/1,810.15
6. Step 6: Final answer
   x = 1,585.47