Finding the Fourth Proportional to 1,470.15, 2,028.78 and 807.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.15 : 2,028.78 = 807.00 : x
2. Step 2: Convert to fraction form
   1,470.15/2,028.78 = 807.00/x
3. Step 3: Cross multiply
   1,470.15x = 2,028.78 × 807.00
4. Step 4: Simplify right side
   1,470.15x = 1,637,217.85
5. Step 5: Solve for x
   x = 1,637,217.85/1,470.15
6. Step 6: Final answer
   x = 1,113.64