Finding the Fourth Proportional to 1,445,111.48, 2,167,716.43 and 686,561.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445,111.48 : 2,167,716.43 = 686,561.47 : x
2. Step 2: Convert to fraction form
   1,445,111.48/2,167,716.43 = 686,561.47/x
3. Step 3: Cross multiply
   1,445,111.48x = 2,167,716.43 × 686,561.47
4. Step 4: Simplify right side
   1,445,111.48x = 1,488,270,574,162.86
5. Step 5: Solve for x
   x = 1,488,270,574,162.86/1,445,111.48
6. Step 6: Final answer
   x = 1,029,865.58