Finding the Fourth Proportional to 1,870, 2,581.06 and 1,161.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870 : 2,581.06 = 1,161.98 : x
2. Step 2: Convert to fraction form
   1,870/2,581.06 = 1,161.98/x
3. Step 3: Cross multiply
   1,870x = 2,581.06 × 1,161.98
4. Step 4: Simplify right side
   1,870x = 2,999,140.10
5. Step 5: Solve for x
   x = 2,999,140.10/1,870
6. Step 6: Final answer
   x = 1,603.82