Finding the Fourth Proportional to 1,991.17, 2,747.48 and 1,106.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.17 : 2,747.48 = 1,106.86 : x
2. Step 2: Convert to fraction form
   1,991.17/2,747.48 = 1,106.86/x
3. Step 3: Cross multiply
   1,991.17x = 2,747.48 × 1,106.86
4. Step 4: Simplify right side
   1,991.17x = 3,041,061.98
5. Step 5: Solve for x
   x = 3,041,061.98/1,991.17
6. Step 6: Final answer
   x = 1,527.27