Finding the Fourth Proportional to 1,940.40, 2,910.72 and 1,577.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.40 : 2,910.72 = 1,577.82 : x
2. Step 2: Convert to fraction form
   1,940.40/2,910.72 = 1,577.82/x
3. Step 3: Cross multiply
   1,940.40x = 2,910.72 × 1,577.82
4. Step 4: Simplify right side
   1,940.40x = 4,592,592.23
5. Step 5: Solve for x
   x = 4,592,592.23/1,940.40
6. Step 6: Final answer
   x = 2,366.83