Finding the Fourth Proportional to 1,385.46, 1,906.20 and 1,051.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.46 : 1,906.20 = 1,051.95 : x
2. Step 2: Convert to fraction form
   1,385.46/1,906.20 = 1,051.95/x
3. Step 3: Cross multiply
   1,385.46x = 1,906.20 × 1,051.95
4. Step 4: Simplify right side
   1,385.46x = 2,005,227.09
5. Step 5: Solve for x
   x = 2,005,227.09/1,385.46
6. Step 6: Final answer
   x = 1,447.34