Finding the Fourth Proportional to 1,556.86, 2,328.38 and 1,384.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.86 : 2,328.38 = 1,384.72 : x
2. Step 2: Convert to fraction form
   1,556.86/2,328.38 = 1,384.72/x
3. Step 3: Cross multiply
   1,556.86x = 2,328.38 × 1,384.72
4. Step 4: Simplify right side
   1,556.86x = 3,224,154.35
5. Step 5: Solve for x
   x = 3,224,154.35/1,556.86
6. Step 6: Final answer
   x = 2,070.93