Finding the Fourth Proportional to 1,045.47, 1,566.18 and 985.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.47 : 1,566.18 = 985.53 : x
2. Step 2: Convert to fraction form
   1,045.47/1,566.18 = 985.53/x
3. Step 3: Cross multiply
   1,045.47x = 1,566.18 × 985.53
4. Step 4: Simplify right side
   1,045.47x = 1,543,517.38
5. Step 5: Solve for x
   x = 1,543,517.38/1,045.47
6. Step 6: Final answer
   x = 1,476.39