Finding the Fourth Proportional to 1,698.54, 2,345.48 and 1,070.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.54 : 2,345.48 = 1,070.18 : x
2. Step 2: Convert to fraction form
   1,698.54/2,345.48 = 1,070.18/x
3. Step 3: Cross multiply
   1,698.54x = 2,345.48 × 1,070.18
4. Step 4: Simplify right side
   1,698.54x = 2,510,085.79
5. Step 5: Solve for x
   x = 2,510,085.79/1,698.54
6. Step 6: Final answer
   x = 1,477.79