Finding the Fourth Proportional to 1,133.86, 1,699.72 and 613.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.86 : 1,699.72 = 613.08 : x
2. Step 2: Convert to fraction form
   1,133.86/1,699.72 = 613.08/x
3. Step 3: Cross multiply
   1,133.86x = 1,699.72 × 613.08
4. Step 4: Simplify right side
   1,133.86x = 1,042,064.34
5. Step 5: Solve for x
   x = 1,042,064.34/1,133.86
6. Step 6: Final answer
   x = 919.04