Finding the Fourth Proportional to 2,107,791.72, 2,908,809 and 1,280,583.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107,791.72 : 2,908,809 = 1,280,583.72 : x
2. Step 2: Convert to fraction form
   2,107,791.72/2,908,809 = 1,280,583.72/x
3. Step 3: Cross multiply
   2,107,791.72x = 2,908,809 × 1,280,583.72
4. Step 4: Simplify right side
   2,107,791.72x = 3,724,973,449,989.48
5. Step 5: Solve for x
   x = 3,724,973,449,989.48/2,107,791.72
6. Step 6: Final answer
   x = 1,767,239.82