Finding the Fourth Proportional to 946,644.32, 1,418,914.69 and 721,261.72

Step by Step Solution

1. Step 1: Write the proportion equation
   946,644.32 : 1,418,914.69 = 721,261.72 : x
2. Step 2: Convert to fraction form
   946,644.32/1,418,914.69 = 721,261.72/x
3. Step 3: Cross multiply
   946,644.32x = 1,418,914.69 × 721,261.72
4. Step 4: Simplify right side
   946,644.32x = 1,023,408,839,141.78
5. Step 5: Solve for x
   x = 1,023,408,839,141.78/946,644.32
6. Step 6: Final answer
   x = 1,081,091.20