Finding the Fourth Proportional to 950,806.35, 1,312,105.23 and 521,085.45

Step by Step Solution

1. Step 1: Write the proportion equation
   950,806.35 : 1,312,105.23 = 521,085.45 : x
2. Step 2: Convert to fraction form
   950,806.35/1,312,105.23 = 521,085.45/x
3. Step 3: Cross multiply
   950,806.35x = 1,312,105.23 × 521,085.45
4. Step 4: Simplify right side
   950,806.35x = 683,718,949,142.30
5. Step 5: Solve for x
   x = 683,718,949,142.30/950,806.35
6. Step 6: Final answer
   x = 719,093.80