Finding the Fourth Proportional to 2,947.47, 4,422.06 and 1,191.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.47 : 4,422.06 = 1,191.57 : x
2. Step 2: Convert to fraction form
   2,947.47/4,422.06 = 1,191.57/x
3. Step 3: Cross multiply
   2,947.47x = 4,422.06 × 1,191.57
4. Step 4: Simplify right side
   2,947.47x = 5,269,194.03
5. Step 5: Solve for x
   x = 5,269,194.03/2,947.47
6. Step 6: Final answer
   x = 1,787.70