Finding the Fourth Proportional to 1,983.61, 2,731.12 and 1,509.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.61 : 2,731.12 = 1,509.98 : x
2. Step 2: Convert to fraction form
   1,983.61/2,731.12 = 1,509.98/x
3. Step 3: Cross multiply
   1,983.61x = 2,731.12 × 1,509.98
4. Step 4: Simplify right side
   1,983.61x = 4,123,919.15
5. Step 5: Solve for x
   x = 4,123,919.15/1,983.61
6. Step 6: Final answer
   x = 2,079.00