Finding the Fourth Proportional to 2,185,501.80, 3,281,205.15 and 1,388,340.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185,501.80 : 3,281,205.15 = 1,388,340.30 : x
2. Step 2: Convert to fraction form
   2,185,501.80/3,281,205.15 = 1,388,340.30/x
3. Step 3: Cross multiply
   2,185,501.80x = 3,281,205.15 × 1,388,340.30
4. Step 4: Simplify right side
   2,185,501.80x = 4,555,429,342,312.55
5. Step 5: Solve for x
   x = 4,555,429,342,312.55/2,185,501.80
6. Step 6: Final answer
   x = 2,084,385.99