Finding the Fourth Proportional to 1,190.83, 1,643.35 and 693.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190.83 : 1,643.35 = 693.76 : x
2. Step 2: Convert to fraction form
   1,190.83/1,643.35 = 693.76/x
3. Step 3: Cross multiply
   1,190.83x = 1,643.35 × 693.76
4. Step 4: Simplify right side
   1,190.83x = 1,140,090.50
5. Step 5: Solve for x
   x = 1,140,090.50/1,190.83
6. Step 6: Final answer
   x = 957.39