Finding the Fourth Proportional to 2,109,918.55, 3,164,877.86 and 512,470.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109,918.55 : 3,164,877.86 = 512,470.87 : x
2. Step 2: Convert to fraction form
   2,109,918.55/3,164,877.86 = 512,470.87/x
3. Step 3: Cross multiply
   2,109,918.55x = 3,164,877.86 × 512,470.87
4. Step 4: Simplify right side
   2,109,918.55x = 1,621,907,707,795.58
5. Step 5: Solve for x
   x = 1,621,907,707,795.58/2,109,918.55
6. Step 6: Final answer
   x = 768,706.31