Finding the Fourth Proportional to 1,356.78, 1,870.92 and 832.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.78 : 1,870.92 = 832.44 : x
2. Step 2: Convert to fraction form
   1,356.78/1,870.92 = 832.44/x
3. Step 3: Cross multiply
   1,356.78x = 1,870.92 × 832.44
4. Step 4: Simplify right side
   1,356.78x = 1,557,428.64
5. Step 5: Solve for x
   x = 1,557,428.64/1,356.78
6. Step 6: Final answer
   x = 1,147.89