Finding the Fourth Proportional to 1,337.40, 1,845.54 and 839.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.40 : 1,845.54 = 839.88 : x
2. Step 2: Convert to fraction form
   1,337.40/1,845.54 = 839.88/x
3. Step 3: Cross multiply
   1,337.40x = 1,845.54 × 839.88
4. Step 4: Simplify right side
   1,337.40x = 1,550,032.14
5. Step 5: Solve for x
   x = 1,550,032.14/1,337.40
6. Step 6: Final answer
   x = 1,158.99