Finding the Fourth Proportional to 1,773.76, 2,654.99 and 991.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.76 : 2,654.99 = 991.37 : x
2. Step 2: Convert to fraction form
   1,773.76/2,654.99 = 991.37/x
3. Step 3: Cross multiply
   1,773.76x = 2,654.99 × 991.37
4. Step 4: Simplify right side
   1,773.76x = 2,632,086.55
5. Step 5: Solve for x
   x = 2,632,086.55/1,773.76
6. Step 6: Final answer
   x = 1,483.90