Finding the Fourth Proportional to 1,156.86, 1,734.83 and 670.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.86 : 1,734.83 = 670.25 : x
2. Step 2: Convert to fraction form
   1,156.86/1,734.83 = 670.25/x
3. Step 3: Cross multiply
   1,156.86x = 1,734.83 × 670.25
4. Step 4: Simplify right side
   1,156.86x = 1,162,773.31
5. Step 5: Solve for x
   x = 1,162,773.31/1,156.86
6. Step 6: Final answer
   x = 1,005.11