Finding the Fourth Proportional to 1,406.37, 1,942.51 and 1,053.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.37 : 1,942.51 = 1,053.87 : x
2. Step 2: Convert to fraction form
   1,406.37/1,942.51 = 1,053.87/x
3. Step 3: Cross multiply
   1,406.37x = 1,942.51 × 1,053.87
4. Step 4: Simplify right side
   1,406.37x = 2,047,153.01
5. Step 5: Solve for x
   x = 2,047,153.01/1,406.37
6. Step 6: Final answer
   x = 1,455.63