Finding the Fourth Proportional to 1,091.06, 1,505.73 and 625.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.06 : 1,505.73 = 625.46 : x
2. Step 2: Convert to fraction form
   1,091.06/1,505.73 = 625.46/x
3. Step 3: Cross multiply
   1,091.06x = 1,505.73 × 625.46
4. Step 4: Simplify right side
   1,091.06x = 941,773.89
5. Step 5: Solve for x
   x = 941,773.89/1,091.06
6. Step 6: Final answer
   x = 863.17