Finding the Fourth Proportional to 3,379.89, 5,069.22 and 914.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,379.89 : 5,069.22 = 914.91 : x
2. Step 2: Convert to fraction form
   3,379.89/5,069.22 = 914.91/x
3. Step 3: Cross multiply
   3,379.89x = 5,069.22 × 914.91
4. Step 4: Simplify right side
   3,379.89x = 4,637,875.50
5. Step 5: Solve for x
   x = 4,637,875.50/3,379.89
6. Step 6: Final answer
   x = 1,372.20