Finding the Fourth Proportional to 2,041.61, 2,817.47 and 1,145.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,041.61 : 2,817.47 = 1,145.31 : x
2. Step 2: Convert to fraction form
   2,041.61/2,817.47 = 1,145.31/x
3. Step 3: Cross multiply
   2,041.61x = 2,817.47 × 1,145.31
4. Step 4: Simplify right side
   2,041.61x = 3,226,870.84
5. Step 5: Solve for x
   x = 3,226,870.84/2,041.61
6. Step 6: Final answer
   x = 1,580.56