Finding the Fourth Proportional to 1,751.10, 2,416.56 and 1,005.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,751.10 : 2,416.56 = 1,005.45 : x
2. Step 2: Convert to fraction form
   1,751.10/2,416.56 = 1,005.45/x
3. Step 3: Cross multiply
   1,751.10x = 2,416.56 × 1,005.45
4. Step 4: Simplify right side
   1,751.10x = 2,429,730.25
5. Step 5: Solve for x
   x = 2,429,730.25/1,751.10
6. Step 6: Final answer
   x = 1,387.55