Finding the Fourth Proportional to 2,389.80, 3,586.10 and 1,003.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.80 : 3,586.10 = 1,003.02 : x
2. Step 2: Convert to fraction form
   2,389.80/3,586.10 = 1,003.02/x
3. Step 3: Cross multiply
   2,389.80x = 3,586.10 × 1,003.02
4. Step 4: Simplify right side
   2,389.80x = 3,596,925.01
5. Step 5: Solve for x
   x = 3,596,925.01/2,389.80
6. Step 6: Final answer
   x = 1,505.12