Finding the Fourth Proportional to 1,079.90, 1,489.83 and 784.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.90 : 1,489.83 = 784.52 : x
2. Step 2: Convert to fraction form
   1,079.90/1,489.83 = 784.52/x
3. Step 3: Cross multiply
   1,079.90x = 1,489.83 × 784.52
4. Step 4: Simplify right side
   1,079.90x = 1,168,801.43
5. Step 5: Solve for x
   x = 1,168,801.43/1,079.90
6. Step 6: Final answer
   x = 1,082.32