Finding the Fourth Proportional to 1,811.16, 2,499.60 and 1,112.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.16 : 2,499.60 = 1,112.12 : x
2. Step 2: Convert to fraction form
   1,811.16/2,499.60 = 1,112.12/x
3. Step 3: Cross multiply
   1,811.16x = 2,499.60 × 1,112.12
4. Step 4: Simplify right side
   1,811.16x = 2,779,855.15
5. Step 5: Solve for x
   x = 2,779,855.15/1,811.16
6. Step 6: Final answer
   x = 1,534.85