Finding the Fourth Proportional to 1,401.90, 1,934.21 and 904.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.90 : 1,934.21 = 904.83 : x
2. Step 2: Convert to fraction form
   1,401.90/1,934.21 = 904.83/x
3. Step 3: Cross multiply
   1,401.90x = 1,934.21 × 904.83
4. Step 4: Simplify right side
   1,401.90x = 1,750,131.23
5. Step 5: Solve for x
   x = 1,750,131.23/1,401.90
6. Step 6: Final answer
   x = 1,248.40