Finding the Fourth Proportional to 1,395.67, 1,926.28 and 923.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.67 : 1,926.28 = 923.59 : x
2. Step 2: Convert to fraction form
   1,395.67/1,926.28 = 923.59/x
3. Step 3: Cross multiply
   1,395.67x = 1,926.28 × 923.59
4. Step 4: Simplify right side
   1,395.67x = 1,779,083.31
5. Step 5: Solve for x
   x = 1,779,083.31/1,395.67
6. Step 6: Final answer
   x = 1,274.72