Finding the Fourth Proportional to 1,539.43, 2,122.72 and 1,041.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,539.43 : 2,122.72 = 1,041.21 : x
2. Step 2: Convert to fraction form
   1,539.43/2,122.72 = 1,041.21/x
3. Step 3: Cross multiply
   1,539.43x = 2,122.72 × 1,041.21
4. Step 4: Simplify right side
   1,539.43x = 2,210,200.54
5. Step 5: Solve for x
   x = 2,210,200.54/1,539.43
6. Step 6: Final answer
   x = 1,435.73