Finding the Fourth Proportional to 2,155.78, 3,232.86 and 1,698.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.78 : 3,232.86 = 1,698.94 : x
2. Step 2: Convert to fraction form
   2,155.78/3,232.86 = 1,698.94/x
3. Step 3: Cross multiply
   2,155.78x = 3,232.86 × 1,698.94
4. Step 4: Simplify right side
   2,155.78x = 5,492,435.17
5. Step 5: Solve for x
   x = 5,492,435.17/2,155.78
6. Step 6: Final answer
   x = 2,547.77