Finding the Fourth Proportional to 1,054.82, 1,455.96 and 661.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.82 : 1,455.96 = 661.83 : x
2. Step 2: Convert to fraction form
   1,054.82/1,455.96 = 661.83/x
3. Step 3: Cross multiply
   1,054.82x = 1,455.96 × 661.83
4. Step 4: Simplify right side
   1,054.82x = 963,598.01
5. Step 5: Solve for x
   x = 963,598.01/1,054.82
6. Step 6: Final answer
   x = 913.52