Finding the Fourth Proportional to 1,429,682.12, 1,973,404.20 and 920,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429,682.12 : 1,973,404.20 = 920,384.50 : x
2. Step 2: Convert to fraction form
   1,429,682.12/1,973,404.20 = 920,384.50/x
3. Step 3: Cross multiply
   1,429,682.12x = 1,973,404.20 × 920,384.50
4. Step 4: Simplify right side
   1,429,682.12x = 1,816,290,637,914.90
5. Step 5: Solve for x
   x = 1,816,290,637,914.90/1,429,682.12
6. Step 6: Final answer
   x = 1,270,415.72