Finding the Fourth Proportional to 1,677.32, 2,314.56 and 931.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.32 : 2,314.56 = 931.22 : x
2. Step 2: Convert to fraction form
   1,677.32/2,314.56 = 931.22/x
3. Step 3: Cross multiply
   1,677.32x = 2,314.56 × 931.22
4. Step 4: Simplify right side
   1,677.32x = 2,155,364.56
5. Step 5: Solve for x
   x = 2,155,364.56/1,677.32
6. Step 6: Final answer
   x = 1,285.00