Finding the Fourth Proportional to 2,317.60, 3,196.02 and 1,385.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.60 : 3,196.02 = 1,385.56 : x
2. Step 2: Convert to fraction form
   2,317.60/3,196.02 = 1,385.56/x
3. Step 3: Cross multiply
   2,317.60x = 3,196.02 × 1,385.56
4. Step 4: Simplify right side
   2,317.60x = 4,428,277.47
5. Step 5: Solve for x
   x = 4,428,277.47/2,317.60
6. Step 6: Final answer
   x = 1,910.72