Finding the Fourth Proportional to 2,945.88, 4,420.60 and 1,191.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.88 : 4,420.60 = 1,191.28 : x
2. Step 2: Convert to fraction form
   2,945.88/4,420.60 = 1,191.28/x
3. Step 3: Cross multiply
   2,945.88x = 4,420.60 × 1,191.28
4. Step 4: Simplify right side
   2,945.88x = 5,266,172.37
5. Step 5: Solve for x
   x = 5,266,172.37/2,945.88
6. Step 6: Final answer
   x = 1,787.64