Finding the Fourth Proportional to 1,386,488.75, 1,913,164.27 and 774,565.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,488.75 : 1,913,164.27 = 774,565.47 : x
2. Step 2: Convert to fraction form
   1,386,488.75/1,913,164.27 = 774,565.47/x
3. Step 3: Cross multiply
   1,386,488.75x = 1,913,164.27 × 774,565.47
4. Step 4: Simplify right side
   1,386,488.75x = 1,481,870,981,979.76
5. Step 5: Solve for x
   x = 1,481,870,981,979.76/1,386,488.75
6. Step 6: Final answer
   x = 1,068,794.09