Finding the Fourth Proportional to 1,870.07, 2,580.59 and 1,030.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.07 : 2,580.59 = 1,030.74 : x
2. Step 2: Convert to fraction form
   1,870.07/2,580.59 = 1,030.74/x
3. Step 3: Cross multiply
   1,870.07x = 2,580.59 × 1,030.74
4. Step 4: Simplify right side
   1,870.07x = 2,659,917.34
5. Step 5: Solve for x
   x = 2,659,917.34/1,870.07
6. Step 6: Final answer
   x = 1,422.36