Finding the Fourth Proportional to 2,003.62, 2,990.98 and 1,913.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.62 : 2,990.98 = 1,913.76 : x
2. Step 2: Convert to fraction form
   2,003.62/2,990.98 = 1,913.76/x
3. Step 3: Cross multiply
   2,003.62x = 2,990.98 × 1,913.76
4. Step 4: Simplify right side
   2,003.62x = 5,724,017.88
5. Step 5: Solve for x
   x = 5,724,017.88/2,003.62
6. Step 6: Final answer
   x = 2,856.84