Finding the Fourth Proportional to 1,435.10, 2,153.10 and 1,127.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.10 : 2,153.10 = 1,127.10 : x
2. Step 2: Convert to fraction form
   1,435.10/2,153.10 = 1,127.10/x
3. Step 3: Cross multiply
   1,435.10x = 2,153.10 × 1,127.10
4. Step 4: Simplify right side
   1,435.10x = 2,426,759.01
5. Step 5: Solve for x
   x = 2,426,759.01/1,435.10
6. Step 6: Final answer
   x = 1,691.00