Finding the Fourth Proportional to 1,516,921.86, 2,275,722.18 and 570,300.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,516,921.86 : 2,275,722.18 = 570,300.78 : x
2. Step 2: Convert to fraction form
   1,516,921.86/2,275,722.18 = 570,300.78/x
3. Step 3: Cross multiply
   1,516,921.86x = 2,275,722.18 × 570,300.78
4. Step 4: Simplify right side
   1,516,921.86x = 1,297,846,134,317.30
5. Step 5: Solve for x
   x = 1,297,846,134,317.30/1,516,921.86
6. Step 6: Final answer
   x = 855,578.77