Finding the Fourth Proportional to 1,434.59, 1,980.02 and 837.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.59 : 1,980.02 = 837.16 : x
2. Step 2: Convert to fraction form
   1,434.59/1,980.02 = 837.16/x
3. Step 3: Cross multiply
   1,434.59x = 1,980.02 × 837.16
4. Step 4: Simplify right side
   1,434.59x = 1,657,587.55
5. Step 5: Solve for x
   x = 1,657,587.55/1,434.59
6. Step 6: Final answer
   x = 1,155.44