Finding the Fourth Proportional to 1,986.05, 2,740.37 and 1,135.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.05 : 2,740.37 = 1,135.58 : x
2. Step 2: Convert to fraction form
   1,986.05/2,740.37 = 1,135.58/x
3. Step 3: Cross multiply
   1,986.05x = 2,740.37 × 1,135.58
4. Step 4: Simplify right side
   1,986.05x = 3,111,898.50
5. Step 5: Solve for x
   x = 3,111,898.50/1,986.05
6. Step 6: Final answer
   x = 1,566.88