Finding the Fourth Proportional to 1,781.30, 2,457.33 and 1,256.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.30 : 2,457.33 = 1,256.18 : x
2. Step 2: Convert to fraction form
   1,781.30/2,457.33 = 1,256.18/x
3. Step 3: Cross multiply
   1,781.30x = 2,457.33 × 1,256.18
4. Step 4: Simplify right side
   1,781.30x = 3,086,848.80
5. Step 5: Solve for x
   x = 3,086,848.80/1,781.30
6. Step 6: Final answer
   x = 1,732.92