Finding the Fourth Proportional to 2,415.72, 3,618.83 and 1,591.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.72 : 3,618.83 = 1,591.49 : x
2. Step 2: Convert to fraction form
   2,415.72/3,618.83 = 1,591.49/x
3. Step 3: Cross multiply
   2,415.72x = 3,618.83 × 1,591.49
4. Step 4: Simplify right side
   2,415.72x = 5,759,331.76
5. Step 5: Solve for x
   x = 5,759,331.76/2,415.72
6. Step 6: Final answer
   x = 2,384.11