Finding the Fourth Proportional to 1,394.67, 1,925.83 and 997.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.67 : 1,925.83 = 997.57 : x
2. Step 2: Convert to fraction form
   1,394.67/1,925.83 = 997.57/x
3. Step 3: Cross multiply
   1,394.67x = 1,925.83 × 997.57
4. Step 4: Simplify right side
   1,394.67x = 1,921,150.23
5. Step 5: Solve for x
   x = 1,921,150.23/1,394.67
6. Step 6: Final answer
   x = 1,377.49