Finding the Fourth Proportional to 1,870.15, 2,580.80 and 1,030.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.15 : 2,580.80 = 1,030.83 : x
2. Step 2: Convert to fraction form
   1,870.15/2,580.80 = 1,030.83/x
3. Step 3: Cross multiply
   1,870.15x = 2,580.80 × 1,030.83
4. Step 4: Simplify right side
   1,870.15x = 2,660,366.06
5. Step 5: Solve for x
   x = 2,660,366.06/1,870.15
6. Step 6: Final answer
   x = 1,422.54