Finding the Fourth Proportional to 1,020,856.89, 1,408,782.50 and 568,254.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020,856.89 : 1,408,782.50 = 568,254.81 : x
2. Step 2: Convert to fraction form
   1,020,856.89/1,408,782.50 = 568,254.81/x
3. Step 3: Cross multiply
   1,020,856.89x = 1,408,782.50 × 568,254.81
4. Step 4: Simplify right side
   1,020,856.89x = 800,547,429,027.55
5. Step 5: Solve for x
   x = 800,547,429,027.55/1,020,856.89
6. Step 6: Final answer
   x = 784,191.63