Finding the Fourth Proportional to 1,697.76, 2,547.59 and 917.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,697.76 : 2,547.59 = 917.75 : x
2. Step 2: Convert to fraction form
   1,697.76/2,547.59 = 917.75/x
3. Step 3: Cross multiply
   1,697.76x = 2,547.59 × 917.75
4. Step 4: Simplify right side
   1,697.76x = 2,338,050.72
5. Step 5: Solve for x
   x = 2,338,050.72/1,697.76
6. Step 6: Final answer
   x = 1,377.14