Finding the Fourth Proportional to 1,337.80, 1,845.68 and 806.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.80 : 1,845.68 = 806.70 : x
2. Step 2: Convert to fraction form
   1,337.80/1,845.68 = 806.70/x
3. Step 3: Cross multiply
   1,337.80x = 1,845.68 × 806.70
4. Step 4: Simplify right side
   1,337.80x = 1,488,910.06
5. Step 5: Solve for x
   x = 1,488,910.06/1,337.80
6. Step 6: Final answer
   x = 1,112.95