Finding the Fourth Proportional to 2,111,288.58, 3,166,888.59 and 513,860.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111,288.58 : 3,166,888.59 = 513,860.58 : x
2. Step 2: Convert to fraction form
   2,111,288.58/3,166,888.59 = 513,860.58/x
3. Step 3: Cross multiply
   2,111,288.58x = 3,166,888.59 × 513,860.58
4. Step 4: Simplify right side
   2,111,288.58x = 1,627,339,207,652.78
5. Step 5: Solve for x
   x = 1,627,339,207,652.78/2,111,288.58
6. Step 6: Final answer
   x = 770,780.09