Finding the Fourth Proportional to 1,870.74, 2,801.96 and 1,210.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.74 : 2,801.96 = 1,210.49 : x
2. Step 2: Convert to fraction form
   1,870.74/2,801.96 = 1,210.49/x
3. Step 3: Cross multiply
   1,870.74x = 2,801.96 × 1,210.49
4. Step 4: Simplify right side
   1,870.74x = 3,391,738.51
5. Step 5: Solve for x
   x = 3,391,738.51/1,870.74
6. Step 6: Final answer
   x = 1,813.05