Finding the Fourth Proportional to 1,373.15, 2,054.93 and 1,123.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.15 : 2,054.93 = 1,123.47 : x
2. Step 2: Convert to fraction form
   1,373.15/2,054.93 = 1,123.47/x
3. Step 3: Cross multiply
   1,373.15x = 2,054.93 × 1,123.47
4. Step 4: Simplify right side
   1,373.15x = 2,308,646.59
5. Step 5: Solve for x
   x = 2,308,646.59/1,373.15
6. Step 6: Final answer
   x = 1,681.28