Finding the Fourth Proportional to 1,434.01, 1,978.26 and 936.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.01 : 1,978.26 = 936.46 : x
2. Step 2: Convert to fraction form
   1,434.01/1,978.26 = 936.46/x
3. Step 3: Cross multiply
   1,434.01x = 1,978.26 × 936.46
4. Step 4: Simplify right side
   1,434.01x = 1,852,561.36
5. Step 5: Solve for x
   x = 1,852,561.36/1,434.01
6. Step 6: Final answer
   x = 1,291.87