Finding the Fourth Proportional to 1,338.41, 1,847.05 and 807.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.41 : 1,847.05 = 807.45 : x
2. Step 2: Convert to fraction form
   1,338.41/1,847.05 = 807.45/x
3. Step 3: Cross multiply
   1,338.41x = 1,847.05 × 807.45
4. Step 4: Simplify right side
   1,338.41x = 1,491,398.50
5. Step 5: Solve for x
   x = 1,491,398.50/1,338.41
6. Step 6: Final answer
   x = 1,114.31