Finding the Fourth Proportional to 1,857,978.91, 2,786,963.20 and 510,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857,978.91 : 2,786,963.20 = 510,142.96 : x
2. Step 2: Convert to fraction form
   1,857,978.91/2,786,963.20 = 510,142.96/x
3. Step 3: Cross multiply
   1,857,978.91x = 2,786,963.20 × 510,142.96
4. Step 4: Simplify right side
   1,857,978.91x = 1,421,749,661,336.97
5. Step 5: Solve for x
   x = 1,421,749,661,336.97/1,857,978.91
6. Step 6: Final answer
   x = 765,213.02