Finding the Fourth Proportional to 1,812.08, 2,499.72 and 1,112.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,812.08 : 2,499.72 = 1,112.24 : x
2. Step 2: Convert to fraction form
   1,812.08/2,499.72 = 1,112.24/x
3. Step 3: Cross multiply
   1,812.08x = 2,499.72 × 1,112.24
4. Step 4: Simplify right side
   1,812.08x = 2,780,288.57
5. Step 5: Solve for x
   x = 2,780,288.57/1,812.08
6. Step 6: Final answer
   x = 1,534.31