Finding the Fourth Proportional to 1,810.03, 2,498.42 and 1,391.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.03 : 2,498.42 = 1,391.77 : x
2. Step 2: Convert to fraction form
   1,810.03/2,498.42 = 1,391.77/x
3. Step 3: Cross multiply
   1,810.03x = 2,498.42 × 1,391.77
4. Step 4: Simplify right side
   1,810.03x = 3,477,218.55
5. Step 5: Solve for x
   x = 3,477,218.55/1,810.03
6. Step 6: Final answer
   x = 1,921.08