Finding the Fourth Proportional to 1,978.52, 2,731.23 and 1,316.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.52 : 2,731.23 = 1,316.27 : x
2. Step 2: Convert to fraction form
   1,978.52/2,731.23 = 1,316.27/x
3. Step 3: Cross multiply
   1,978.52x = 2,731.23 × 1,316.27
4. Step 4: Simplify right side
   1,978.52x = 3,595,042.94
5. Step 5: Solve for x
   x = 3,595,042.94/1,978.52
6. Step 6: Final answer
   x = 1,817.04