Finding the Fourth Proportional to 1,483.74, 2,228.59 and 891.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.74 : 2,228.59 = 891.93 : x
2. Step 2: Convert to fraction form
   1,483.74/2,228.59 = 891.93/x
3. Step 3: Cross multiply
   1,483.74x = 2,228.59 × 891.93
4. Step 4: Simplify right side
   1,483.74x = 1,987,744.61
5. Step 5: Solve for x
   x = 1,987,744.61/1,483.74
6. Step 6: Final answer
   x = 1,339.69