Finding the Fourth Proportional to 1,705.58, 2,353.71 and 1,007.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.58 : 2,353.71 = 1,007.30 : x
2. Step 2: Convert to fraction form
   1,705.58/2,353.71 = 1,007.30/x
3. Step 3: Cross multiply
   1,705.58x = 2,353.71 × 1,007.30
4. Step 4: Simplify right side
   1,705.58x = 2,370,892.08
5. Step 5: Solve for x
   x = 2,370,892.08/1,705.58
6. Step 6: Final answer
   x = 1,390.08