Finding the Fourth Proportional to 1,915.84, 2,641.98 and 1,601.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.84 : 2,641.98 = 1,601.56 : x
2. Step 2: Convert to fraction form
   1,915.84/2,641.98 = 1,601.56/x
3. Step 3: Cross multiply
   1,915.84x = 2,641.98 × 1,601.56
4. Step 4: Simplify right side
   1,915.84x = 4,231,289.49
5. Step 5: Solve for x
   x = 4,231,289.49/1,915.84
6. Step 6: Final answer
   x = 2,208.58