Finding the Fourth Proportional to 1,401.80, 1,933.84 and 904.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.80 : 1,933.84 = 904.60 : x
2. Step 2: Convert to fraction form
   1,401.80/1,933.84 = 904.60/x
3. Step 3: Cross multiply
   1,401.80x = 1,933.84 × 904.60
4. Step 4: Simplify right side
   1,401.80x = 1,749,351.66
5. Step 5: Solve for x
   x = 1,749,351.66/1,401.80
6. Step 6: Final answer
   x = 1,247.93