Finding the Fourth Proportional to 2,901.42, 4,352.00 and 821.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,901.42 : 4,352.00 = 821.61 : x
2. Step 2: Convert to fraction form
   2,901.42/4,352.00 = 821.61/x
3. Step 3: Cross multiply
   2,901.42x = 4,352.00 × 821.61
4. Step 4: Simplify right side
   2,901.42x = 3,575,642.61
5. Step 5: Solve for x
   x = 3,575,642.61/2,901.42
6. Step 6: Final answer
   x = 1,232.38