Finding the Fourth Proportional to 2,105,047.61, 2,904,302.57 and 1,288,399.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,047.61 : 2,904,302.57 = 1,288,399.94 : x
2. Step 2: Convert to fraction form
   2,105,047.61/2,904,302.57 = 1,288,399.94/x
3. Step 3: Cross multiply
   2,105,047.61x = 2,904,302.57 × 1,288,399.94
4. Step 4: Simplify right side
   2,105,047.61x = 3,741,903,242,408.33
5. Step 5: Solve for x
   x = 3,741,903,242,408.33/2,105,047.61
6. Step 6: Final answer
   x = 1,777,586.04