Finding the Fourth Proportional to 2,003.72, 3,012.03 and 1,858.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.72 : 3,012.03 = 1,858.14 : x
2. Step 2: Convert to fraction form
   2,003.72/3,012.03 = 1,858.14/x
3. Step 3: Cross multiply
   2,003.72x = 3,012.03 × 1,858.14
4. Step 4: Simplify right side
   2,003.72x = 5,596,773.42
5. Step 5: Solve for x
   x = 5,596,773.42/2,003.72
6. Step 6: Final answer
   x = 2,793.20