Finding the Fourth Proportional to 2,309,128.91, 3,186,503.73 and 1,276,570.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309,128.91 : 3,186,503.73 = 1,276,570.97 : x
2. Step 2: Convert to fraction form
   2,309,128.91/3,186,503.73 = 1,276,570.97/x
3. Step 3: Cross multiply
   2,309,128.91x = 3,186,503.73 × 1,276,570.97
4. Step 4: Simplify right side
   2,309,128.91x = 4,067,798,141,582.20
5. Step 5: Solve for x
   x = 4,067,798,141,582.20/2,309,128.91
6. Step 6: Final answer
   x = 1,761,615.88