Finding the Fourth Proportional to 2,194,191.21, 3,291,601.59 and 678,006.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,194,191.21 : 3,291,601.59 = 678,006.48 : x
2. Step 2: Convert to fraction form
   2,194,191.21/3,291,601.59 = 678,006.48/x
3. Step 3: Cross multiply
   2,194,191.21x = 3,291,601.59 × 678,006.48
4. Step 4: Simplify right side
   2,194,191.21x = 2,231,727,207,598.30
5. Step 5: Solve for x
   x = 2,231,727,207,598.30/2,194,191.21
6. Step 6: Final answer
   x = 1,017,106.99