Finding the Fourth Proportional to 1,191.84, 1,647.20 and 1,047.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.84 : 1,647.20 = 1,047.76 : x
2. Step 2: Convert to fraction form
   1,191.84/1,647.20 = 1,047.76/x
3. Step 3: Cross multiply
   1,191.84x = 1,647.20 × 1,047.76
4. Step 4: Simplify right side
   1,191.84x = 1,725,870.27
5. Step 5: Solve for x
   x = 1,725,870.27/1,191.84
6. Step 6: Final answer
   x = 1,448.07