Finding the Fourth Proportional to 1,337.21, 1,843.62 and 916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.21 : 1,843.62 = 916.82 : x
2. Step 2: Convert to fraction form
   1,337.21/1,843.62 = 916.82/x
3. Step 3: Cross multiply
   1,337.21x = 1,843.62 × 916.82
4. Step 4: Simplify right side
   1,337.21x = 1,690,258.47
5. Step 5: Solve for x
   x = 1,690,258.47/1,337.21
6. Step 6: Final answer
   x = 1,264.02