Finding the Fourth Proportional to 1,434.81, 1,980.05 and 937.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.81 : 1,980.05 = 937.15 : x
2. Step 2: Convert to fraction form
   1,434.81/1,980.05 = 937.15/x
3. Step 3: Cross multiply
   1,434.81x = 1,980.05 × 937.15
4. Step 4: Simplify right side
   1,434.81x = 1,855,603.86
5. Step 5: Solve for x
   x = 1,855,603.86/1,434.81
6. Step 6: Final answer
   x = 1,293.27