Finding the Fourth Proportional to 1,870.02, 2,802.42 and 1,089.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.02 : 2,802.42 = 1,089.54 : x
2. Step 2: Convert to fraction form
   1,870.02/2,802.42 = 1,089.54/x
3. Step 3: Cross multiply
   1,870.02x = 2,802.42 × 1,089.54
4. Step 4: Simplify right side
   1,870.02x = 3,053,348.69
5. Step 5: Solve for x
   x = 3,053,348.69/1,870.02
6. Step 6: Final answer
   x = 1,632.79