Finding the Fourth Proportional to 2,486.72, 3,727.65 and 1,026.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,486.72 : 3,727.65 = 1,026.89 : x
2. Step 2: Convert to fraction form
   2,486.72/3,727.65 = 1,026.89/x
3. Step 3: Cross multiply
   2,486.72x = 3,727.65 × 1,026.89
4. Step 4: Simplify right side
   2,486.72x = 3,827,886.51
5. Step 5: Solve for x
   x = 3,827,886.51/2,486.72
6. Step 6: Final answer
   x = 1,539.33