Finding the Fourth Proportional to 1,810.57, 2,498.60 and 1,111.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.57 : 2,498.60 = 1,111.95 : x
2. Step 2: Convert to fraction form
   1,810.57/2,498.60 = 1,111.95/x
3. Step 3: Cross multiply
   1,810.57x = 2,498.60 × 1,111.95
4. Step 4: Simplify right side
   1,810.57x = 2,778,318.27
5. Step 5: Solve for x
   x = 2,778,318.27/1,810.57
6. Step 6: Final answer
   x = 1,534.50