Finding the Fourth Proportional to 1,192.28, 1,787.72 and 1,059.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192.28 : 1,787.72 = 1,059.03 : x
2. Step 2: Convert to fraction form
   1,192.28/1,787.72 = 1,059.03/x
3. Step 3: Cross multiply
   1,192.28x = 1,787.72 × 1,059.03
4. Step 4: Simplify right side
   1,192.28x = 1,893,243.82
5. Step 5: Solve for x
   x = 1,893,243.82/1,192.28
6. Step 6: Final answer
   x = 1,587.93