Finding the Fourth Proportional to 1,588.48, 2,384.78 and 1,223.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.48 : 2,384.78 = 1,223.51 : x
2. Step 2: Convert to fraction form
   1,588.48/2,384.78 = 1,223.51/x
3. Step 3: Cross multiply
   1,588.48x = 2,384.78 × 1,223.51
4. Step 4: Simplify right side
   1,588.48x = 2,917,784.14
5. Step 5: Solve for x
   x = 2,917,784.14/1,588.48
6. Step 6: Final answer
   x = 1,836.84