Finding the Fourth Proportional to 1,700.35, 2,551.89 and 878.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,700.35 : 2,551.89 = 878.86 : x
2. Step 2: Convert to fraction form
   1,700.35/2,551.89 = 878.86/x
3. Step 3: Cross multiply
   1,700.35x = 2,551.89 × 878.86
4. Step 4: Simplify right side
   1,700.35x = 2,242,760.43
5. Step 5: Solve for x
   x = 2,242,760.43/1,700.35
6. Step 6: Final answer
   x = 1,319.00