Finding the Fourth Proportional to 1,869.35, 2,579.72 and 1,030.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.35 : 2,579.72 = 1,030.10 : x
2. Step 2: Convert to fraction form
   1,869.35/2,579.72 = 1,030.10/x
3. Step 3: Cross multiply
   1,869.35x = 2,579.72 × 1,030.10
4. Step 4: Simplify right side
   1,869.35x = 2,657,351.52
5. Step 5: Solve for x
   x = 2,657,351.52/1,869.35
6. Step 6: Final answer
   x = 1,421.54