Finding the Fourth Proportional to 1,167.34, 1,752.63 and 619.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.34 : 1,752.63 = 619.78 : x
2. Step 2: Convert to fraction form
   1,167.34/1,752.63 = 619.78/x
3. Step 3: Cross multiply
   1,167.34x = 1,752.63 × 619.78
4. Step 4: Simplify right side
   1,167.34x = 1,086,245.02
5. Step 5: Solve for x
   x = 1,086,245.02/1,167.34
6. Step 6: Final answer
   x = 930.53