Finding the Fourth Proportional to 1,396.50, 1,927.34 and 807.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.50 : 1,927.34 = 807.04 : x
2. Step 2: Convert to fraction form
   1,396.50/1,927.34 = 807.04/x
3. Step 3: Cross multiply
   1,396.50x = 1,927.34 × 807.04
4. Step 4: Simplify right side
   1,396.50x = 1,555,440.47
5. Step 5: Solve for x
   x = 1,555,440.47/1,396.50
6. Step 6: Final answer
   x = 1,113.81