Finding the Fourth Proportional to 1,431.41, 1,973.97 and 934.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.41 : 1,973.97 = 934.49 : x
2. Step 2: Convert to fraction form
   1,431.41/1,973.97 = 934.49/x
3. Step 3: Cross multiply
   1,431.41x = 1,973.97 × 934.49
4. Step 4: Simplify right side
   1,431.41x = 1,844,655.23
5. Step 5: Solve for x
   x = 1,844,655.23/1,431.41
6. Step 6: Final answer
   x = 1,288.70