Finding the Fourth Proportional to 1,309,445.25, 1,964,250.90 and 410,922.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,445.25 : 1,964,250.90 = 410,922.42 : x
2. Step 2: Convert to fraction form
   1,309,445.25/1,964,250.90 = 410,922.42/x
3. Step 3: Cross multiply
   1,309,445.25x = 1,964,250.90 × 410,922.42
4. Step 4: Simplify right side
   1,309,445.25x = 807,154,733,315.18
5. Step 5: Solve for x
   x = 807,154,733,315.18/1,309,445.25
6. Step 6: Final answer
   x = 616,409.68