Finding the Fourth Proportional to 1,118.91, 1,677.42 and 533.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.91 : 1,677.42 = 533.61 : x
2. Step 2: Convert to fraction form
   1,118.91/1,677.42 = 533.61/x
3. Step 3: Cross multiply
   1,118.91x = 1,677.42 × 533.61
4. Step 4: Simplify right side
   1,118.91x = 895,088.09
5. Step 5: Solve for x
   x = 895,088.09/1,118.91
6. Step 6: Final answer
   x = 799.96