Finding the Fourth Proportional to 1,381.30, 1,903.96 and 1,082.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.30 : 1,903.96 = 1,082.03 : x
2. Step 2: Convert to fraction form
   1,381.30/1,903.96 = 1,082.03/x
3. Step 3: Cross multiply
   1,381.30x = 1,903.96 × 1,082.03
4. Step 4: Simplify right side
   1,381.30x = 2,060,141.84
5. Step 5: Solve for x
   x = 2,060,141.84/1,381.30
6. Step 6: Final answer
   x = 1,491.45