Finding the Fourth Proportional to 1,090.18, 1,503.36 and 696.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090.18 : 1,503.36 = 696.52 : x
2. Step 2: Convert to fraction form
   1,090.18/1,503.36 = 696.52/x
3. Step 3: Cross multiply
   1,090.18x = 1,503.36 × 696.52
4. Step 4: Simplify right side
   1,090.18x = 1,047,120.31
5. Step 5: Solve for x
   x = 1,047,120.31/1,090.18
6. Step 6: Final answer
   x = 960.50