Finding the Fourth Proportional to 2,218,667.39, 3,329,889.49 and 871,771.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,667.39 : 3,329,889.49 = 871,771.85 : x
2. Step 2: Convert to fraction form
   2,218,667.39/3,329,889.49 = 871,771.85/x
3. Step 3: Cross multiply
   2,218,667.39x = 3,329,889.49 × 871,771.85
4. Step 4: Simplify right side
   2,218,667.39x = 2,902,903,904,343.41
5. Step 5: Solve for x
   x = 2,902,903,904,343.41/2,218,667.39
6. Step 6: Final answer
   x = 1,308,399.77