Finding the Fourth Proportional to 2,990.19, 4,482.72 and 1,140

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.19 : 4,482.72 = 1,140 : x
2. Step 2: Convert to fraction form
   2,990.19/4,482.72 = 1,140/x
3. Step 3: Cross multiply
   2,990.19x = 4,482.72 × 1,140
4. Step 4: Simplify right side
   2,990.19x = 5,110,300.80
5. Step 5: Solve for x
   x = 5,110,300.80/2,990.19
6. Step 6: Final answer
   x = 1,709.02