Finding the Fourth Proportional to 1,191.02, 1,643.52 and 693.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.02 : 1,643.52 = 693.62 : x
2. Step 2: Convert to fraction form
   1,191.02/1,643.52 = 693.62/x
3. Step 3: Cross multiply
   1,191.02x = 1,643.52 × 693.62
4. Step 4: Simplify right side
   1,191.02x = 1,139,978.34
5. Step 5: Solve for x
   x = 1,139,978.34/1,191.02
6. Step 6: Final answer
   x = 957.14