Finding the Fourth Proportional to 1,411.15, 2,115.71 and 533.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.15 : 2,115.71 = 533.59 : x
2. Step 2: Convert to fraction form
   1,411.15/2,115.71 = 533.59/x
3. Step 3: Cross multiply
   1,411.15x = 2,115.71 × 533.59
4. Step 4: Simplify right side
   1,411.15x = 1,128,921.70
5. Step 5: Solve for x
   x = 1,128,921.70/1,411.15
6. Step 6: Final answer
   x = 800.00