Finding the Fourth Proportional to 1,140.01, 1,574.17 and 698.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.01 : 1,574.17 = 698.05 : x
2. Step 2: Convert to fraction form
   1,140.01/1,574.17 = 698.05/x
3. Step 3: Cross multiply
   1,140.01x = 1,574.17 × 698.05
4. Step 4: Simplify right side
   1,140.01x = 1,098,849.37
5. Step 5: Solve for x
   x = 1,098,849.37/1,140.01
6. Step 6: Final answer
   x = 963.90