Finding the Fourth Proportional to 1,316,598.63, 1,816,391.71 and 765,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316,598.63 : 1,816,391.71 = 765,222.72 : x
2. Step 2: Convert to fraction form
   1,316,598.63/1,816,391.71 = 765,222.72/x
3. Step 3: Cross multiply
   1,316,598.63x = 1,816,391.71 × 765,222.72
4. Step 4: Simplify right side
   1,316,598.63x = 1,389,944,204,911.65
5. Step 5: Solve for x
   x = 1,389,944,204,911.65/1,316,598.63
6. Step 6: Final answer
   x = 1,055,708.38