Finding the Fourth Proportional to 1,434.92, 1,980.39 and 837.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.92 : 1,980.39 = 837.61 : x
2. Step 2: Convert to fraction form
   1,434.92/1,980.39 = 837.61/x
3. Step 3: Cross multiply
   1,434.92x = 1,980.39 × 837.61
4. Step 4: Simplify right side
   1,434.92x = 1,658,794.47
5. Step 5: Solve for x
   x = 1,658,794.47/1,434.92
6. Step 6: Final answer
   x = 1,156.02