Finding the Fourth Proportional to 2,209,663.78, 3,314,635.76 and 693,406.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209,663.78 : 3,314,635.76 = 693,406.56 : x
2. Step 2: Convert to fraction form
   2,209,663.78/3,314,635.76 = 693,406.56/x
3. Step 3: Cross multiply
   2,209,663.78x = 3,314,635.76 × 693,406.56
4. Step 4: Simplify right side
   2,209,663.78x = 2,298,390,179,994.59
5. Step 5: Solve for x
   x = 2,298,390,179,994.59/2,209,663.78
6. Step 6: Final answer
   x = 1,040,153.80