Finding the Fourth Proportional to 2,186.59, 3,019.64 and 1,870.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.59 : 3,019.64 = 1,870.03 : x
2. Step 2: Convert to fraction form
   2,186.59/3,019.64 = 1,870.03/x
3. Step 3: Cross multiply
   2,186.59x = 3,019.64 × 1,870.03
4. Step 4: Simplify right side
   2,186.59x = 5,646,817.39
5. Step 5: Solve for x
   x = 5,646,817.39/2,186.59
6. Step 6: Final answer
   x = 2,582.48