Finding the Fourth Proportional to 1,677.35, 2,314.76 and 931.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.35 : 2,314.76 = 931.32 : x
2. Step 2: Convert to fraction form
   1,677.35/2,314.76 = 931.32/x
3. Step 3: Cross multiply
   1,677.35x = 2,314.76 × 931.32
4. Step 4: Simplify right side
   1,677.35x = 2,155,777.63
5. Step 5: Solve for x
   x = 2,155,777.63/1,677.35
6. Step 6: Final answer
   x = 1,285.23