Finding the Fourth Proportional to 1,191,920, 1,789,003.56 and 434,493.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,920 : 1,789,003.56 = 434,493.50 : x
2. Step 2: Convert to fraction form
   1,191,920/1,789,003.56 = 434,493.50/x
3. Step 3: Cross multiply
   1,191,920x = 1,789,003.56 × 434,493.50
4. Step 4: Simplify right side
   1,191,920x = 777,310,418,296.86
5. Step 5: Solve for x
   x = 777,310,418,296.86/1,191,920
6. Step 6: Final answer
   x = 652,149.82