Finding the Fourth Proportional to 1,401.76, 1,933.77 and 904.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.76 : 1,933.77 = 904.55 : x
2. Step 2: Convert to fraction form
   1,401.76/1,933.77 = 904.55/x
3. Step 3: Cross multiply
   1,401.76x = 1,933.77 × 904.55
4. Step 4: Simplify right side
   1,401.76x = 1,749,196.49
5. Step 5: Solve for x
   x = 1,749,196.49/1,401.76
6. Step 6: Final answer
   x = 1,247.86