Finding the Fourth Proportional to 1,483.57, 2,048.16 and 986.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.57 : 2,048.16 = 986.89 : x
2. Step 2: Convert to fraction form
   1,483.57/2,048.16 = 986.89/x
3. Step 3: Cross multiply
   1,483.57x = 2,048.16 × 986.89
4. Step 4: Simplify right side
   1,483.57x = 2,021,308.62
5. Step 5: Solve for x
   x = 2,021,308.62/1,483.57
6. Step 6: Final answer
   x = 1,362.46