Finding the Fourth Proportional to 1,406.73, 2,109.37 and 748.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.73 : 2,109.37 = 748.98 : x
2. Step 2: Convert to fraction form
   1,406.73/2,109.37 = 748.98/x
3. Step 3: Cross multiply
   1,406.73x = 2,109.37 × 748.98
4. Step 4: Simplify right side
   1,406.73x = 1,579,875.65
5. Step 5: Solve for x
   x = 1,579,875.65/1,406.73
6. Step 6: Final answer
   x = 1,123.08