Finding the Fourth Proportional to 1,870.22, 2,580.71 and 1,030.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.22 : 2,580.71 = 1,030.88 : x
2. Step 2: Convert to fraction form
   1,870.22/2,580.71 = 1,030.88/x
3. Step 3: Cross multiply
   1,870.22x = 2,580.71 × 1,030.88
4. Step 4: Simplify right side
   1,870.22x = 2,660,394.90
5. Step 5: Solve for x
   x = 2,660,394.90/1,870.22
6. Step 6: Final answer
   x = 1,422.50