Finding the Fourth Proportional to 1,435,540.50, 1,980,620.91 and 854,297.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435,540.50 : 1,980,620.91 = 854,297.67 : x
2. Step 2: Convert to fraction form
   1,435,540.50/1,980,620.91 = 854,297.67/x
3. Step 3: Cross multiply
   1,435,540.50x = 1,980,620.91 × 854,297.67
4. Step 4: Simplify right side
   1,435,540.50x = 1,692,039,835,993.61
5. Step 5: Solve for x
   x = 1,692,039,835,993.61/1,435,540.50
6. Step 6: Final answer
   x = 1,178,677.88