Finding the Fourth Proportional to 1,400.72, 2,097.02 and 1,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.72 : 2,097.02 = 1,055.50 : x
2. Step 2: Convert to fraction form
   1,400.72/2,097.02 = 1,055.50/x
3. Step 3: Cross multiply
   1,400.72x = 2,097.02 × 1,055.50
4. Step 4: Simplify right side
   1,400.72x = 2,213,402.01
5. Step 5: Solve for x
   x = 2,213,402.01/1,400.72
6. Step 6: Final answer
   x = 1,580.19