Finding the Fourth Proportional to 1,100.21, 1,518.48 and 701.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.21 : 1,518.48 = 701.99 : x
2. Step 2: Convert to fraction form
   1,100.21/1,518.48 = 701.99/x
3. Step 3: Cross multiply
   1,100.21x = 1,518.48 × 701.99
4. Step 4: Simplify right side
   1,100.21x = 1,065,963.82
5. Step 5: Solve for x
   x = 1,065,963.82/1,100.21
6. Step 6: Final answer
   x = 968.88