Finding the Fourth Proportional to 1,401.72, 1,933.28 and 904.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.72 : 1,933.28 = 904.41 : x
2. Step 2: Convert to fraction form
   1,401.72/1,933.28 = 904.41/x
3. Step 3: Cross multiply
   1,401.72x = 1,933.28 × 904.41
4. Step 4: Simplify right side
   1,401.72x = 1,748,473.24
5. Step 5: Solve for x
   x = 1,748,473.24/1,401.72
6. Step 6: Final answer
   x = 1,247.38