Finding the Fourth Proportional to 1,227.51, 1,693.41 and 807.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.51 : 1,693.41 = 807.32 : x
2. Step 2: Convert to fraction form
   1,227.51/1,693.41 = 807.32/x
3. Step 3: Cross multiply
   1,227.51x = 1,693.41 × 807.32
4. Step 4: Simplify right side
   1,227.51x = 1,367,123.76
5. Step 5: Solve for x
   x = 1,367,123.76/1,227.51
6. Step 6: Final answer
   x = 1,113.74