Finding the Fourth Proportional to 2,385.21, 3,578.04 and 741.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.21 : 3,578.04 = 741.31 : x
2. Step 2: Convert to fraction form
   2,385.21/3,578.04 = 741.31/x
3. Step 3: Cross multiply
   2,385.21x = 3,578.04 × 741.31
4. Step 4: Simplify right side
   2,385.21x = 2,652,436.83
5. Step 5: Solve for x
   x = 2,652,436.83/2,385.21
6. Step 6: Final answer
   x = 1,112.03