Finding the Fourth Proportional to 2,236,644.96, 3,086,548.80 and 1,218,066.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236,644.96 : 3,086,548.80 = 1,218,066.72 : x
2. Step 2: Convert to fraction form
   2,236,644.96/3,086,548.80 = 1,218,066.72/x
3. Step 3: Cross multiply
   2,236,644.96x = 3,086,548.80 × 1,218,066.72
4. Step 4: Simplify right side
   2,236,644.96x = 3,759,622,372,935.94
5. Step 5: Solve for x
   x = 3,759,622,372,935.94/2,236,644.96
6. Step 6: Final answer
   x = 1,680,920.50