Finding the Fourth Proportional to 1,771.93, 2,654.72 and 991.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,771.93 : 2,654.72 = 991.02 : x
2. Step 2: Convert to fraction form
   1,771.93/2,654.72 = 991.02/x
3. Step 3: Cross multiply
   1,771.93x = 2,654.72 × 991.02
4. Step 4: Simplify right side
   1,771.93x = 2,630,880.61
5. Step 5: Solve for x
   x = 2,630,880.61/1,771.93
6. Step 6: Final answer
   x = 1,484.75