Finding the Fourth Proportional to 1,434,270.72, 1,979,279.04 and 789,678.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,270.72 : 1,979,279.04 = 789,678.72 : x
2. Step 2: Convert to fraction form
   1,434,270.72/1,979,279.04 = 789,678.72/x
3. Step 3: Cross multiply
   1,434,270.72x = 1,979,279.04 × 789,678.72
4. Step 4: Simplify right side
   1,434,270.72x = 1,562,994,538,830.03
5. Step 5: Solve for x
   x = 1,562,994,538,830.03/1,434,270.72
6. Step 6: Final answer
   x = 1,089,748.62