Finding the Fourth Proportional to 3,669.12, 5,063.34 and 1,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.12 : 5,063.34 = 1,990.50 : x
2. Step 2: Convert to fraction form
   3,669.12/5,063.34 = 1,990.50/x
3. Step 3: Cross multiply
   3,669.12x = 5,063.34 × 1,990.50
4. Step 4: Simplify right side
   3,669.12x = 10,078,566.75
5. Step 5: Solve for x
   x = 10,078,566.75/3,669.12
6. Step 6: Final answer
   x = 2,746.86