Finding the Fourth Proportional to 1,079.46, 1,490.88 and 786.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.46 : 1,490.88 = 786.04 : x
2. Step 2: Convert to fraction form
   1,079.46/1,490.88 = 786.04/x
3. Step 3: Cross multiply
   1,079.46x = 1,490.88 × 786.04
4. Step 4: Simplify right side
   1,079.46x = 1,171,891.32
5. Step 5: Solve for x
   x = 1,171,891.32/1,079.46
6. Step 6: Final answer
   x = 1,085.63