Finding the Fourth Proportional to 1,393.06, 1,920.38 and 1,060.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.06 : 1,920.38 = 1,060.91 : x
2. Step 2: Convert to fraction form
   1,393.06/1,920.38 = 1,060.91/x
3. Step 3: Cross multiply
   1,393.06x = 1,920.38 × 1,060.91
4. Step 4: Simplify right side
   1,393.06x = 2,037,346.19
5. Step 5: Solve for x
   x = 2,037,346.19/1,393.06
6. Step 6: Final answer
   x = 1,462.50