Finding the Fourth Proportional to 1,870.90, 2,804.55 and 1,454.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.90 : 2,804.55 = 1,454.20 : x
2. Step 2: Convert to fraction form
   1,870.90/2,804.55 = 1,454.20/x
3. Step 3: Cross multiply
   1,870.90x = 2,804.55 × 1,454.20
4. Step 4: Simplify right side
   1,870.90x = 4,078,376.61
5. Step 5: Solve for x
   x = 4,078,376.61/1,870.90
6. Step 6: Final answer
   x = 2,179.90