Finding the Fourth Proportional to 1,345.58, 1,854.12 and 1,030.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.58 : 1,854.12 = 1,030.83 : x
2. Step 2: Convert to fraction form
   1,345.58/1,854.12 = 1,030.83/x
3. Step 3: Cross multiply
   1,345.58x = 1,854.12 × 1,030.83
4. Step 4: Simplify right side
   1,345.58x = 1,911,279.43
5. Step 5: Solve for x
   x = 1,911,279.43/1,345.58
6. Step 6: Final answer
   x = 1,420.41