Finding the Fourth Proportional to 1,870.07, 2,579.18 and 1,645.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.07 : 2,579.18 = 1,645.52 : x
2. Step 2: Convert to fraction form
   1,870.07/2,579.18 = 1,645.52/x
3. Step 3: Cross multiply
   1,870.07x = 2,579.18 × 1,645.52
4. Step 4: Simplify right side
   1,870.07x = 4,244,071.15
5. Step 5: Solve for x
   x = 4,244,071.15/1,870.07
6. Step 6: Final answer
   x = 2,269.48