Finding the Fourth Proportional to 1,061.05, 1,583.25 and 1,054.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.05 : 1,583.25 = 1,054.97 : x
2. Step 2: Convert to fraction form
   1,061.05/1,583.25 = 1,054.97/x
3. Step 3: Cross multiply
   1,061.05x = 1,583.25 × 1,054.97
4. Step 4: Simplify right side
   1,061.05x = 1,670,283.89
5. Step 5: Solve for x
   x = 1,670,283.89/1,061.05
6. Step 6: Final answer
   x = 1,574.18