Finding the Fourth Proportional to 2,376.89, 3,280.09 and 1,328.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.89 : 3,280.09 = 1,328.95 : x
2. Step 2: Convert to fraction form
   2,376.89/3,280.09 = 1,328.95/x
3. Step 3: Cross multiply
   2,376.89x = 3,280.09 × 1,328.95
4. Step 4: Simplify right side
   2,376.89x = 4,359,075.61
5. Step 5: Solve for x
   x = 4,359,075.61/2,376.89
6. Step 6: Final answer
   x = 1,833.94