Finding the Fourth Proportional to 1,578.55, 2,368.51 and 847.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.55 : 2,368.51 = 847.27 : x
2. Step 2: Convert to fraction form
   1,578.55/2,368.51 = 847.27/x
3. Step 3: Cross multiply
   1,578.55x = 2,368.51 × 847.27
4. Step 4: Simplify right side
   1,578.55x = 2,006,767.78
5. Step 5: Solve for x
   x = 2,006,767.78/1,578.55
6. Step 6: Final answer
   x = 1,271.27