Finding the Fourth Proportional to 2,309.82, 3,465.54 and 1,012.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.82 : 3,465.54 = 1,012.20 : x
2. Step 2: Convert to fraction form
   2,309.82/3,465.54 = 1,012.20/x
3. Step 3: Cross multiply
   2,309.82x = 3,465.54 × 1,012.20
4. Step 4: Simplify right side
   2,309.82x = 3,507,819.59
5. Step 5: Solve for x
   x = 3,507,819.59/2,309.82
6. Step 6: Final answer
   x = 1,518.65