Finding the Fourth Proportional to 2,990.10, 4,485.33 and 1,141.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.10 : 4,485.33 = 1,141.39 : x
2. Step 2: Convert to fraction form
   2,990.10/4,485.33 = 1,141.39/x
3. Step 3: Cross multiply
   2,990.10x = 4,485.33 × 1,141.39
4. Step 4: Simplify right side
   2,990.10x = 5,119,510.81
5. Step 5: Solve for x
   x = 5,119,510.81/2,990.10
6. Step 6: Final answer
   x = 1,712.15