Finding the Fourth Proportional to 2,405,866.78, 3,609,131.87 and 808,553.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405,866.78 : 3,609,131.87 = 808,553.67 : x
2. Step 2: Convert to fraction form
   2,405,866.78/3,609,131.87 = 808,553.67/x
3. Step 3: Cross multiply
   2,405,866.78x = 3,609,131.87 × 808,553.67
4. Step 4: Simplify right side
   2,405,866.78x = 2,918,176,819,002.46
5. Step 5: Solve for x
   x = 2,918,176,819,002.46/2,405,866.78
6. Step 6: Final answer
   x = 1,212,941.98