Finding the Fourth Proportional to 2,412,898.78, 3,619,345.12 and 615,782.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412,898.78 : 3,619,345.12 = 615,782.31 : x
2. Step 2: Convert to fraction form
   2,412,898.78/3,619,345.12 = 615,782.31/x
3. Step 3: Cross multiply
   2,412,898.78x = 3,619,345.12 × 615,782.31
4. Step 4: Simplify right side
   2,412,898.78x = 2,228,728,698,680.83
5. Step 5: Solve for x
   x = 2,228,728,698,680.83/2,412,898.78
6. Step 6: Final answer
   x = 923,672.69