Finding the Fourth Proportional to 1,092.47, 1,506.61 and 813.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.47 : 1,506.61 = 813.41 : x
2. Step 2: Convert to fraction form
   1,092.47/1,506.61 = 813.41/x
3. Step 3: Cross multiply
   1,092.47x = 1,506.61 × 813.41
4. Step 4: Simplify right side
   1,092.47x = 1,225,482.07
5. Step 5: Solve for x
   x = 1,225,482.07/1,092.47
6. Step 6: Final answer
   x = 1,121.75