Finding the Fourth Proportional to 1,915.24, 2,641.80 and 1,325.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.24 : 2,641.80 = 1,325.56 : x
2. Step 2: Convert to fraction form
   1,915.24/2,641.80 = 1,325.56/x
3. Step 3: Cross multiply
   1,915.24x = 2,641.80 × 1,325.56
4. Step 4: Simplify right side
   1,915.24x = 3,501,864.41
5. Step 5: Solve for x
   x = 3,501,864.41/1,915.24
6. Step 6: Final answer
   x = 1,828.42