Finding the Fourth Proportional to 1,425,456.07, 1,967,178.55 and 780,876.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425,456.07 : 1,967,178.55 = 780,876.32 : x
2. Step 2: Convert to fraction form
   1,425,456.07/1,967,178.55 = 780,876.32/x
3. Step 3: Cross multiply
   1,425,456.07x = 1,967,178.55 × 780,876.32
4. Step 4: Simplify right side
   1,425,456.07x = 1,536,123,146,906.94
5. Step 5: Solve for x
   x = 1,536,123,146,906.94/1,425,456.07
6. Step 6: Final answer
   x = 1,077,636.26