Finding the Fourth Proportional to 1,085.24, 1,618.71 and 1,052.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.24 : 1,618.71 = 1,052.92 : x
2. Step 2: Convert to fraction form
   1,085.24/1,618.71 = 1,052.92/x
3. Step 3: Cross multiply
   1,085.24x = 1,618.71 × 1,052.92
4. Step 4: Simplify right side
   1,085.24x = 1,704,372.13
5. Step 5: Solve for x
   x = 1,704,372.13/1,085.24
6. Step 6: Final answer
   x = 1,570.50