Finding the Fourth Proportional to 762,212.57, 1,051,856.89 and 422,680.82

Step by Step Solution

1. Step 1: Write the proportion equation
   762,212.57 : 1,051,856.89 = 422,680.82 : x
2. Step 2: Convert to fraction form
   762,212.57/1,051,856.89 = 422,680.82/x
3. Step 3: Cross multiply
   762,212.57x = 1,051,856.89 × 422,680.82
4. Step 4: Simplify right side
   762,212.57x = 444,599,726,471.86
5. Step 5: Solve for x
   x = 444,599,726,471.86/762,212.57
6. Step 6: Final answer
   x = 583,301.49