Finding the Fourth Proportional to 1,333.83, 1,997.33 and 986.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.83 : 1,997.33 = 986.65 : x
2. Step 2: Convert to fraction form
   1,333.83/1,997.33 = 986.65/x
3. Step 3: Cross multiply
   1,333.83x = 1,997.33 × 986.65
4. Step 4: Simplify right side
   1,333.83x = 1,970,655.72
5. Step 5: Solve for x
   x = 1,970,655.72/1,333.83
6. Step 6: Final answer
   x = 1,477.44