Finding the Fourth Proportional to 1,726.78, 2,384.31 and 1,394.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.78 : 2,384.31 = 1,394.14 : x
2. Step 2: Convert to fraction form
   1,726.78/2,384.31 = 1,394.14/x
3. Step 3: Cross multiply
   1,726.78x = 2,384.31 × 1,394.14
4. Step 4: Simplify right side
   1,726.78x = 3,324,061.94
5. Step 5: Solve for x
   x = 3,324,061.94/1,726.78
6. Step 6: Final answer
   x = 1,925.01