Finding the Fourth Proportional to 1,742.31, 2,404.43 and 986.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.31 : 2,404.43 = 986.03 : x
2. Step 2: Convert to fraction form
   1,742.31/2,404.43 = 986.03/x
3. Step 3: Cross multiply
   1,742.31x = 2,404.43 × 986.03
4. Step 4: Simplify right side
   1,742.31x = 2,370,836.57
5. Step 5: Solve for x
   x = 2,370,836.57/1,742.31
6. Step 6: Final answer
   x = 1,360.75