Finding the Fourth Proportional to 1,870.31, 2,580.97 and 1,031.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.31 : 2,580.97 = 1,031.01 : x
2. Step 2: Convert to fraction form
   1,870.31/2,580.97 = 1,031.01/x
3. Step 3: Cross multiply
   1,870.31x = 2,580.97 × 1,031.01
4. Step 4: Simplify right side
   1,870.31x = 2,661,005.88
5. Step 5: Solve for x
   x = 2,661,005.88/1,870.31
6. Step 6: Final answer
   x = 1,422.76