Finding the Fourth Proportional to 1,513.36, 2,087.18 and 1,066.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.36 : 2,087.18 = 1,066.69 : x
2. Step 2: Convert to fraction form
   1,513.36/2,087.18 = 1,066.69/x
3. Step 3: Cross multiply
   1,513.36x = 2,087.18 × 1,066.69
4. Step 4: Simplify right side
   1,513.36x = 2,226,363.60
5. Step 5: Solve for x
   x = 2,226,363.60/1,513.36
6. Step 6: Final answer
   x = 1,471.14