Finding the Fourth Proportional to 2,066.70, 2,886.90 and 2,066.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.70 : 2,886.90 = 2,066.70 : x
2. Step 2: Convert to fraction form
   2,066.70/2,886.90 = 2,066.70/x
3. Step 3: Cross multiply
   2,066.70x = 2,886.90 × 2,066.70
4. Step 4: Simplify right side
   2,066.70x = 5,966,356.23
5. Step 5: Solve for x
   x = 5,966,356.23/2,066.70
6. Step 6: Final answer
   x = 2,886.90