Finding the Fourth Proportional to 1,979.10, 2,968.56 and 938.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.10 : 2,968.56 = 938.34 : x
2. Step 2: Convert to fraction form
   1,979.10/2,968.56 = 938.34/x
3. Step 3: Cross multiply
   1,979.10x = 2,968.56 × 938.34
4. Step 4: Simplify right side
   1,979.10x = 2,785,518.59
5. Step 5: Solve for x
   x = 2,785,518.59/1,979.10
6. Step 6: Final answer
   x = 1,407.47