Finding the Fourth Proportional to 1,015.82, 1,521.56 and 942.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.82 : 1,521.56 = 942.38 : x
2. Step 2: Convert to fraction form
   1,015.82/1,521.56 = 942.38/x
3. Step 3: Cross multiply
   1,015.82x = 1,521.56 × 942.38
4. Step 4: Simplify right side
   1,015.82x = 1,433,887.71
5. Step 5: Solve for x
   x = 1,433,887.71/1,015.82
6. Step 6: Final answer
   x = 1,411.56