Finding the Fourth Proportional to 1,991.64, 2,748.95 and 1,152.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.64 : 2,748.95 = 1,152.83 : x
2. Step 2: Convert to fraction form
   1,991.64/2,748.95 = 1,152.83/x
3. Step 3: Cross multiply
   1,991.64x = 2,748.95 × 1,152.83
4. Step 4: Simplify right side
   1,991.64x = 3,169,052.52
5. Step 5: Solve for x
   x = 3,169,052.52/1,991.64
6. Step 6: Final answer
   x = 1,591.18