Finding the Fourth Proportional to 1,803.30, 2,487.15 and 1,383

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.30 : 2,487.15 = 1,383 : x
2. Step 2: Convert to fraction form
   1,803.30/2,487.15 = 1,383/x
3. Step 3: Cross multiply
   1,803.30x = 2,487.15 × 1,383
4. Step 4: Simplify right side
   1,803.30x = 3,439,728.45
5. Step 5: Solve for x
   x = 3,439,728.45/1,803.30
6. Step 6: Final answer
   x = 1,907.46