Finding the Fourth Proportional to 2,412.83, 3,619.78 and 1,026.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412.83 : 3,619.78 = 1,026.21 : x
2. Step 2: Convert to fraction form
   2,412.83/3,619.78 = 1,026.21/x
3. Step 3: Cross multiply
   2,412.83x = 3,619.78 × 1,026.21
4. Step 4: Simplify right side
   2,412.83x = 3,714,654.43
5. Step 5: Solve for x
   x = 3,714,654.43/2,412.83
6. Step 6: Final answer
   x = 1,539.55