Finding the Fourth Proportional to 1,369.31, 1,888.43 and 927.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.31 : 1,888.43 = 927.81 : x
2. Step 2: Convert to fraction form
   1,369.31/1,888.43 = 927.81/x
3. Step 3: Cross multiply
   1,369.31x = 1,888.43 × 927.81
4. Step 4: Simplify right side
   1,369.31x = 1,752,099.60
5. Step 5: Solve for x
   x = 1,752,099.60/1,369.31
6. Step 6: Final answer
   x = 1,279.55