Finding the Fourth Proportional to 2,651.60, 3,978.77 and 1,092.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.60 : 3,978.77 = 1,092.75 : x
2. Step 2: Convert to fraction form
   2,651.60/3,978.77 = 1,092.75/x
3. Step 3: Cross multiply
   2,651.60x = 3,978.77 × 1,092.75
4. Step 4: Simplify right side
   2,651.60x = 4,347,810.37
5. Step 5: Solve for x
   x = 4,347,810.37/2,651.60
6. Step 6: Final answer
   x = 1,639.69