Finding the Fourth Proportional to 1,349,978.72, 1,863,142.01 and 769,410.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,349,978.72 : 1,863,142.01 = 769,410.55 : x
2. Step 2: Convert to fraction form
   1,349,978.72/1,863,142.01 = 769,410.55/x
3. Step 3: Cross multiply
   1,349,978.72x = 1,863,142.01 × 769,410.55
4. Step 4: Simplify right side
   1,349,978.72x = 1,433,521,118,642.21
5. Step 5: Solve for x
   x = 1,433,521,118,642.21/1,349,978.72
6. Step 6: Final answer
   x = 1,061,884.23