Finding the Fourth Proportional to 1,703.90, 2,350.71 and 985.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,703.90 : 2,350.71 = 985.61 : x
2. Step 2: Convert to fraction form
   1,703.90/2,350.71 = 985.61/x
3. Step 3: Cross multiply
   1,703.90x = 2,350.71 × 985.61
4. Step 4: Simplify right side
   1,703.90x = 2,316,871.53
5. Step 5: Solve for x
   x = 2,316,871.53/1,703.90
6. Step 6: Final answer
   x = 1,359.75