Finding the Fourth Proportional to 1,091.82, 1,507.23 and 625.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.82 : 1,507.23 = 625.98 : x
2. Step 2: Convert to fraction form
   1,091.82/1,507.23 = 625.98/x
3. Step 3: Cross multiply
   1,091.82x = 1,507.23 × 625.98
4. Step 4: Simplify right side
   1,091.82x = 943,495.84
5. Step 5: Solve for x
   x = 943,495.84/1,091.82
6. Step 6: Final answer
   x = 864.15