Finding the Fourth Proportional to 1,114.06, 1,528.43 and 1,085.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.06 : 1,528.43 = 1,085.32 : x
2. Step 2: Convert to fraction form
   1,114.06/1,528.43 = 1,085.32/x
3. Step 3: Cross multiply
   1,114.06x = 1,528.43 × 1,085.32
4. Step 4: Simplify right side
   1,114.06x = 1,658,835.65
5. Step 5: Solve for x
   x = 1,658,835.65/1,114.06
6. Step 6: Final answer
   x = 1,489.00