Finding the Fourth Proportional to 1,395.93, 1,925.72 and 997.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.93 : 1,925.72 = 997.68 : x
2. Step 2: Convert to fraction form
   1,395.93/1,925.72 = 997.68/x
3. Step 3: Cross multiply
   1,395.93x = 1,925.72 × 997.68
4. Step 4: Simplify right side
   1,395.93x = 1,921,247.34
5. Step 5: Solve for x
   x = 1,921,247.34/1,395.93
6. Step 6: Final answer
   x = 1,376.32