Finding the Fourth Proportional to 2,652.52, 3,978.64 and 1,092.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,652.52 : 3,978.64 = 1,092.14 : x
2. Step 2: Convert to fraction form
   2,652.52/3,978.64 = 1,092.14/x
3. Step 3: Cross multiply
   2,652.52x = 3,978.64 × 1,092.14
4. Step 4: Simplify right side
   2,652.52x = 4,345,231.89
5. Step 5: Solve for x
   x = 4,345,231.89/2,652.52
6. Step 6: Final answer
   x = 1,638.15