Finding the Fourth Proportional to 1,434.85, 1,980.11 and 837.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.85 : 1,980.11 = 837.38 : x
2. Step 2: Convert to fraction form
   1,434.85/1,980.11 = 837.38/x
3. Step 3: Cross multiply
   1,434.85x = 1,980.11 × 837.38
4. Step 4: Simplify right side
   1,434.85x = 1,658,100.42
5. Step 5: Solve for x
   x = 1,658,100.42/1,434.85
6. Step 6: Final answer
   x = 1,155.59