Finding the Fourth Proportional to 1,571.31, 2,168.91 and 1,073.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.31 : 2,168.91 = 1,073.77 : x
2. Step 2: Convert to fraction form
   1,571.31/2,168.91 = 1,073.77/x
3. Step 3: Cross multiply
   1,571.31x = 2,168.91 × 1,073.77
4. Step 4: Simplify right side
   1,571.31x = 2,328,894.28
5. Step 5: Solve for x
   x = 2,328,894.28/1,571.31
6. Step 6: Final answer
   x = 1,482.14