Finding the Fourth Proportional to 1,406.74, 1,939.17 and 1,013.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.74 : 1,939.17 = 1,013.62 : x
2. Step 2: Convert to fraction form
   1,406.74/1,939.17 = 1,013.62/x
3. Step 3: Cross multiply
   1,406.74x = 1,939.17 × 1,013.62
4. Step 4: Simplify right side
   1,406.74x = 1,965,581.50
5. Step 5: Solve for x
   x = 1,965,581.50/1,406.74
6. Step 6: Final answer
   x = 1,397.26