Finding the Fourth Proportional to 2,385.21, 3,577.91 and 741.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.21 : 3,577.91 = 741.72 : x
2. Step 2: Convert to fraction form
   2,385.21/3,577.91 = 741.72/x
3. Step 3: Cross multiply
   2,385.21x = 3,577.91 × 741.72
4. Step 4: Simplify right side
   2,385.21x = 2,653,807.41
5. Step 5: Solve for x
   x = 2,653,807.41/2,385.21
6. Step 6: Final answer
   x = 1,112.61