Finding the Fourth Proportional to 1,360.45, 1,875.40 and 986.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.45 : 1,875.40 = 986.83 : x
2. Step 2: Convert to fraction form
   1,360.45/1,875.40 = 986.83/x
3. Step 3: Cross multiply
   1,360.45x = 1,875.40 × 986.83
4. Step 4: Simplify right side
   1,360.45x = 1,850,709.93
5. Step 5: Solve for x
   x = 1,850,709.93/1,360.45
6. Step 6: Final answer
   x = 1,360.37