Finding the Fourth Proportional to 1,342.60, 1,852.69 and 900.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.60 : 1,852.69 = 900.43 : x
2. Step 2: Convert to fraction form
   1,342.60/1,852.69 = 900.43/x
3. Step 3: Cross multiply
   1,342.60x = 1,852.69 × 900.43
4. Step 4: Simplify right side
   1,342.60x = 1,668,217.66
5. Step 5: Solve for x
   x = 1,668,217.66/1,342.60
6. Step 6: Final answer
   x = 1,242.53