Finding the Fourth Proportional to 1,395.98, 1,925.78 and 923.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.98 : 1,925.78 = 923.76 : x
2. Step 2: Convert to fraction form
   1,395.98/1,925.78 = 923.76/x
3. Step 3: Cross multiply
   1,395.98x = 1,925.78 × 923.76
4. Step 4: Simplify right side
   1,395.98x = 1,778,958.53
5. Step 5: Solve for x
   x = 1,778,958.53/1,395.98
6. Step 6: Final answer
   x = 1,274.34