Finding the Fourth Proportional to 1,918.45, 2,645.80 and 1,498.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.45 : 2,645.80 = 1,498.15 : x
2. Step 2: Convert to fraction form
   1,918.45/2,645.80 = 1,498.15/x
3. Step 3: Cross multiply
   1,918.45x = 2,645.80 × 1,498.15
4. Step 4: Simplify right side
   1,918.45x = 3,963,805.27
5. Step 5: Solve for x
   x = 3,963,805.27/1,918.45
6. Step 6: Final answer
   x = 2,066.15