Finding the Fourth Proportional to 2,045.61, 3,066.87 and 1,057.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.61 : 3,066.87 = 1,057.38 : x
2. Step 2: Convert to fraction form
   2,045.61/3,066.87 = 1,057.38/x
3. Step 3: Cross multiply
   2,045.61x = 3,066.87 × 1,057.38
4. Step 4: Simplify right side
   2,045.61x = 3,242,847.00
5. Step 5: Solve for x
   x = 3,242,847.00/2,045.61
6. Step 6: Final answer
   x = 1,585.27