Finding the Fourth Proportional to 1,356.23, 1,871.04 and 1,002.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.23 : 1,871.04 = 1,002.97 : x
2. Step 2: Convert to fraction form
   1,356.23/1,871.04 = 1,002.97/x
3. Step 3: Cross multiply
   1,356.23x = 1,871.04 × 1,002.97
4. Step 4: Simplify right side
   1,356.23x = 1,876,592.31
5. Step 5: Solve for x
   x = 1,876,592.31/1,356.23
6. Step 6: Final answer
   x = 1,383.69