Finding the Fourth Proportional to 3,109.16, 4,290.76 and 1,782.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.16 : 4,290.76 = 1,782.92 : x
2. Step 2: Convert to fraction form
   3,109.16/4,290.76 = 1,782.92/x
3. Step 3: Cross multiply
   3,109.16x = 4,290.76 × 1,782.92
4. Step 4: Simplify right side
   3,109.16x = 7,650,081.82
5. Step 5: Solve for x
   x = 7,650,081.82/3,109.16
6. Step 6: Final answer
   x = 2,460.50