Finding the Fourth Proportional to 2,910.90, 4,368.15 and 1,155.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.90 : 4,368.15 = 1,155.62 : x
2. Step 2: Convert to fraction form
   2,910.90/4,368.15 = 1,155.62/x
3. Step 3: Cross multiply
   2,910.90x = 4,368.15 × 1,155.62
4. Step 4: Simplify right side
   2,910.90x = 5,047,899.66
5. Step 5: Solve for x
   x = 5,047,899.66/2,910.90
6. Step 6: Final answer
   x = 1,734.14