Finding the Fourth Proportional to 1,986.56, 2,980.27 and 753.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.56 : 2,980.27 = 753.99 : x
2. Step 2: Convert to fraction form
   1,986.56/2,980.27 = 753.99/x
3. Step 3: Cross multiply
   1,986.56x = 2,980.27 × 753.99
4. Step 4: Simplify right side
   1,986.56x = 2,247,083.54
5. Step 5: Solve for x
   x = 2,247,083.54/1,986.56
6. Step 6: Final answer
   x = 1,131.14