Finding the Fourth Proportional to 1,218,078.63, 1,680,895.59 and 674,181.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,078.63 : 1,680,895.59 = 674,181.96 : x
2. Step 2: Convert to fraction form
   1,218,078.63/1,680,895.59 = 674,181.96/x
3. Step 3: Cross multiply
   1,218,078.63x = 1,680,895.59 × 674,181.96
4. Step 4: Simplify right side
   1,218,078.63x = 1,133,229,483,421.56
5. Step 5: Solve for x
   x = 1,133,229,483,421.56/1,218,078.63
6. Step 6: Final answer
   x = 930,341.81