Finding the Fourth Proportional to 1,470.72, 2,029.58 and 807.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.72 : 2,029.58 = 807.58 : x
2. Step 2: Convert to fraction form
   1,470.72/2,029.58 = 807.58/x
3. Step 3: Cross multiply
   1,470.72x = 2,029.58 × 807.58
4. Step 4: Simplify right side
   1,470.72x = 1,639,048.22
5. Step 5: Solve for x
   x = 1,639,048.22/1,470.72
6. Step 6: Final answer
   x = 1,114.45