Finding the Fourth Proportional to 1,107,017.56, 1,661,157.78 and 433,153.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,107,017.56 : 1,661,157.78 = 433,153.72 : x
2. Step 2: Convert to fraction form
   1,107,017.56/1,661,157.78 = 433,153.72/x
3. Step 3: Cross multiply
   1,107,017.56x = 1,661,157.78 × 433,153.72
4. Step 4: Simplify right side
   1,107,017.56x = 719,536,671,913.94
5. Step 5: Solve for x
   x = 719,536,671,913.94/1,107,017.56
6. Step 6: Final answer
   x = 649,977.65