Finding the Fourth Proportional to 1,116,165.30, 1,674,904.05 and 406,265.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,165.30 : 1,674,904.05 = 406,265.10 : x
2. Step 2: Convert to fraction form
   1,116,165.30/1,674,904.05 = 406,265.10/x
3. Step 3: Cross multiply
   1,116,165.30x = 1,674,904.05 × 406,265.10
4. Step 4: Simplify right side
   1,116,165.30x = 680,455,061,363.66
5. Step 5: Solve for x
   x = 680,455,061,363.66/1,116,165.30
6. Step 6: Final answer
   x = 609,636.46