Finding the Fourth Proportional to 1,978.71, 2,729.35 and 1,192

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.71 : 2,729.35 = 1,192 : x
2. Step 2: Convert to fraction form
   1,978.71/2,729.35 = 1,192/x
3. Step 3: Cross multiply
   1,978.71x = 2,729.35 × 1,192
4. Step 4: Simplify right side
   1,978.71x = 3,253,385.20
5. Step 5: Solve for x
   x = 3,253,385.20/1,978.71
6. Step 6: Final answer
   x = 1,644.20