Finding the Fourth Proportional to 1,573.60, 2,348.74 and 1,389.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.60 : 2,348.74 = 1,389.10 : x
2. Step 2: Convert to fraction form
   1,573.60/2,348.74 = 1,389.10/x
3. Step 3: Cross multiply
   1,573.60x = 2,348.74 × 1,389.10
4. Step 4: Simplify right side
   1,573.60x = 3,262,634.73
5. Step 5: Solve for x
   x = 3,262,634.73/1,573.60
6. Step 6: Final answer
   x = 2,073.36