Finding the Fourth Proportional to 1,111.61, 1,670.85 and 703.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.61 : 1,670.85 = 703.37 : x
2. Step 2: Convert to fraction form
   1,111.61/1,670.85 = 703.37/x
3. Step 3: Cross multiply
   1,111.61x = 1,670.85 × 703.37
4. Step 4: Simplify right side
   1,111.61x = 1,175,217.41
5. Step 5: Solve for x
   x = 1,175,217.41/1,111.61
6. Step 6: Final answer
   x = 1,057.23