Finding the Fourth Proportional to 1,054.98, 1,456.32 and 661.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.98 : 1,456.32 = 661.92 : x
2. Step 2: Convert to fraction form
   1,054.98/1,456.32 = 661.92/x
3. Step 3: Cross multiply
   1,054.98x = 1,456.32 × 661.92
4. Step 4: Simplify right side
   1,054.98x = 963,967.33
5. Step 5: Solve for x
   x = 963,967.33/1,054.98
6. Step 6: Final answer
   x = 913.73