Finding the Fourth Proportional to 2,107,705.76, 3,161,566.20 and 510,265.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107,705.76 : 3,161,566.20 = 510,265.76 : x
2. Step 2: Convert to fraction form
   2,107,705.76/3,161,566.20 = 510,265.76/x
3. Step 3: Cross multiply
   2,107,705.76x = 3,161,566.20 × 510,265.76
4. Step 4: Simplify right side
   2,107,705.76x = 1,613,238,979,833.31
5. Step 5: Solve for x
   x = 1,613,238,979,833.31/2,107,705.76
6. Step 6: Final answer
   x = 765,400.47