Finding the Fourth Proportional to 2,275,618.30, 3,140,448.61 and 1,308,749.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275,618.30 : 3,140,448.61 = 1,308,749.25 : x
2. Step 2: Convert to fraction form
   2,275,618.30/3,140,448.61 = 1,308,749.25/x
3. Step 3: Cross multiply
   2,275,618.30x = 3,140,448.61 × 1,308,749.25
4. Step 4: Simplify right side
   2,275,618.30x = 4,110,059,763,001.04
5. Step 5: Solve for x
   x = 4,110,059,763,001.04/2,275,618.30
6. Step 6: Final answer
   x = 1,806,128.81