Finding the Fourth Proportional to 1,084.28, 1,506.35 and 1,074.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.28 : 1,506.35 = 1,074.15 : x
2. Step 2: Convert to fraction form
   1,084.28/1,506.35 = 1,074.15/x
3. Step 3: Cross multiply
   1,084.28x = 1,506.35 × 1,074.15
4. Step 4: Simplify right side
   1,084.28x = 1,618,048.54
5. Step 5: Solve for x
   x = 1,618,048.54/1,084.28
6. Step 6: Final answer
   x = 1,492.29