Finding the Fourth Proportional to 1,105.21, 1,525.02 and 707.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.21 : 1,525.02 = 707.23 : x
2. Step 2: Convert to fraction form
   1,105.21/1,525.02 = 707.23/x
3. Step 3: Cross multiply
   1,105.21x = 1,525.02 × 707.23
4. Step 4: Simplify right side
   1,105.21x = 1,078,539.89
5. Step 5: Solve for x
   x = 1,078,539.89/1,105.21
6. Step 6: Final answer
   x = 975.87