Finding the Fourth Proportional to 2,385.79, 3,576.56 and 904.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.79 : 3,576.56 = 904.73 : x
2. Step 2: Convert to fraction form
   2,385.79/3,576.56 = 904.73/x
3. Step 3: Cross multiply
   2,385.79x = 3,576.56 × 904.73
4. Step 4: Simplify right side
   2,385.79x = 3,235,798.72
5. Step 5: Solve for x
   x = 3,235,798.72/2,385.79
6. Step 6: Final answer
   x = 1,356.28