Finding the Fourth Proportional to 1,874.50, 2,812.77 and 705.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.50 : 2,812.77 = 705.31 : x
2. Step 2: Convert to fraction form
   1,874.50/2,812.77 = 705.31/x
3. Step 3: Cross multiply
   1,874.50x = 2,812.77 × 705.31
4. Step 4: Simplify right side
   1,874.50x = 1,983,874.81
5. Step 5: Solve for x
   x = 1,983,874.81/1,874.50
6. Step 6: Final answer
   x = 1,058.35