Finding the Fourth Proportional to 1,703.89, 2,351.73 and 1,005.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,703.89 : 2,351.73 = 1,005.40 : x
2. Step 2: Convert to fraction form
   1,703.89/2,351.73 = 1,005.40/x
3. Step 3: Cross multiply
   1,703.89x = 2,351.73 × 1,005.40
4. Step 4: Simplify right side
   1,703.89x = 2,364,429.34
5. Step 5: Solve for x
   x = 2,364,429.34/1,703.89
6. Step 6: Final answer
   x = 1,387.67