Finding the Fourth Proportional to 1,758.42, 2,428.74 and 1,318.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.42 : 2,428.74 = 1,318.26 : x
2. Step 2: Convert to fraction form
   1,758.42/2,428.74 = 1,318.26/x
3. Step 3: Cross multiply
   1,758.42x = 2,428.74 × 1,318.26
4. Step 4: Simplify right side
   1,758.42x = 3,201,710.79
5. Step 5: Solve for x
   x = 3,201,710.79/1,758.42
6. Step 6: Final answer
   x = 1,820.79