Finding the Fourth Proportional to 1,870.50, 2,579.64 and 1,207.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.50 : 2,579.64 = 1,207.10 : x
2. Step 2: Convert to fraction form
   1,870.50/2,579.64 = 1,207.10/x
3. Step 3: Cross multiply
   1,870.50x = 2,579.64 × 1,207.10
4. Step 4: Simplify right side
   1,870.50x = 3,113,883.44
5. Step 5: Solve for x
   x = 3,113,883.44/1,870.50
6. Step 6: Final answer
   x = 1,664.73