Finding the Fourth Proportional to 1,339.47, 1,848.20 and 897.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.47 : 1,848.20 = 897.93 : x
2. Step 2: Convert to fraction form
   1,339.47/1,848.20 = 897.93/x
3. Step 3: Cross multiply
   1,339.47x = 1,848.20 × 897.93
4. Step 4: Simplify right side
   1,339.47x = 1,659,549.74
5. Step 5: Solve for x
   x = 1,659,549.74/1,339.47
6. Step 6: Final answer
   x = 1,238.96