Finding the Fourth Proportional to 1,360.56, 1,874.24 and 986.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.56 : 1,874.24 = 986.44 : x
2. Step 2: Convert to fraction form
   1,360.56/1,874.24 = 986.44/x
3. Step 3: Cross multiply
   1,360.56x = 1,874.24 × 986.44
4. Step 4: Simplify right side
   1,360.56x = 1,848,825.31
5. Step 5: Solve for x
   x = 1,848,825.31/1,360.56
6. Step 6: Final answer
   x = 1,358.87