Finding the Fourth Proportional to 1,986.66, 2,978.37 and 753.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.66 : 2,978.37 = 753.37 : x
2. Step 2: Convert to fraction form
   1,986.66/2,978.37 = 753.37/x
3. Step 3: Cross multiply
   1,986.66x = 2,978.37 × 753.37
4. Step 4: Simplify right side
   1,986.66x = 2,243,807.16
5. Step 5: Solve for x
   x = 2,243,807.16/1,986.66
6. Step 6: Final answer
   x = 1,129.44