Finding the Fourth Proportional to 1,407.17, 1,940.96 and 1,111.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.17 : 1,940.96 = 1,111.93 : x
2. Step 2: Convert to fraction form
   1,407.17/1,940.96 = 1,111.93/x
3. Step 3: Cross multiply
   1,407.17x = 1,940.96 × 1,111.93
4. Step 4: Simplify right side
   1,407.17x = 2,158,209.58
5. Step 5: Solve for x
   x = 2,158,209.58/1,407.17
6. Step 6: Final answer
   x = 1,533.72