Finding the Fourth Proportional to 1,415.30, 2,113.52 and 1,400.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.30 : 2,113.52 = 1,400.04 : x
2. Step 2: Convert to fraction form
   1,415.30/2,113.52 = 1,400.04/x
3. Step 3: Cross multiply
   1,415.30x = 2,113.52 × 1,400.04
4. Step 4: Simplify right side
   1,415.30x = 2,959,012.54
5. Step 5: Solve for x
   x = 2,959,012.54/1,415.30
6. Step 6: Final answer
   x = 2,090.73