Finding the Fourth Proportional to 1,396.56, 1,927.34 and 807.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.56 : 1,927.34 = 807.08 : x
2. Step 2: Convert to fraction form
   1,396.56/1,927.34 = 807.08/x
3. Step 3: Cross multiply
   1,396.56x = 1,927.34 × 807.08
4. Step 4: Simplify right side
   1,396.56x = 1,555,517.57
5. Step 5: Solve for x
   x = 1,555,517.57/1,396.56
6. Step 6: Final answer
   x = 1,113.82