Finding the Fourth Proportional to 1,323.31, 1,979.13 and 1,178.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.31 : 1,979.13 = 1,178.10 : x
2. Step 2: Convert to fraction form
   1,323.31/1,979.13 = 1,178.10/x
3. Step 3: Cross multiply
   1,323.31x = 1,979.13 × 1,178.10
4. Step 4: Simplify right side
   1,323.31x = 2,331,613.05
5. Step 5: Solve for x
   x = 2,331,613.05/1,323.31
6. Step 6: Final answer
   x = 1,761.96