Finding the Fourth Proportional to 1,395.73, 1,925.72 and 997.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.73 : 1,925.72 = 997.51 : x
2. Step 2: Convert to fraction form
   1,395.73/1,925.72 = 997.51/x
3. Step 3: Cross multiply
   1,395.73x = 1,925.72 × 997.51
4. Step 4: Simplify right side
   1,395.73x = 1,920,924.96
5. Step 5: Solve for x
   x = 1,920,924.96/1,395.73
6. Step 6: Final answer
   x = 1,376.29