Finding the Fourth Proportional to 1,401.40, 1,934.80 and 904.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.40 : 1,934.80 = 904.92 : x
2. Step 2: Convert to fraction form
   1,401.40/1,934.80 = 904.92/x
3. Step 3: Cross multiply
   1,401.40x = 1,934.80 × 904.92
4. Step 4: Simplify right side
   1,401.40x = 1,750,839.22
5. Step 5: Solve for x
   x = 1,750,839.22/1,401.40
6. Step 6: Final answer
   x = 1,249.35