Finding the Fourth Proportional to 2,457.86, 3,685.79 and 897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.86 : 3,685.79 = 897.50 : x
2. Step 2: Convert to fraction form
   2,457.86/3,685.79 = 897.50/x
3. Step 3: Cross multiply
   2,457.86x = 3,685.79 × 897.50
4. Step 4: Simplify right side
   2,457.86x = 3,307,973.61
5. Step 5: Solve for x
   x = 3,307,973.61/2,457.86
6. Step 6: Final answer
   x = 1,345.88