Finding the Fourth Proportional to 1,426.66, 1,968.10 and 1,007.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.66 : 1,968.10 = 1,007.08 : x
2. Step 2: Convert to fraction form
   1,426.66/1,968.10 = 1,007.08/x
3. Step 3: Cross multiply
   1,426.66x = 1,968.10 × 1,007.08
4. Step 4: Simplify right side
   1,426.66x = 1,982,034.15
5. Step 5: Solve for x
   x = 1,982,034.15/1,426.66
6. Step 6: Final answer
   x = 1,389.28